X

Track changes made to this page

If you find this page useful and would like to be notified of changes made to this page, start by inputting your email below.



Privacy policy
Close this window

powered by ChangeDetection

Difference between revisions of "37-063-30045"

m
m
Line 23: Line 23:
 
| Unconventional: No
 
| Unconventional: No
 
|-
 
|-
| Horizontal: No
+
| Configuration: Vertical
 
|-
 
|-
 
| Well Status: ACTIVE
 
| Well Status: ACTIVE
Line 243: Line 243:
 
|-
 
|-
 
| 2014-0
 
| 2014-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1992-0
 +
| style="text-align:right;" | 10405.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1993-0
 +
| style="text-align:right;" | 9172.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1991-0
 +
| style="text-align:right;" | 18476.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1997-0
 +
| style="text-align:right;" | 3534.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1998-0
 +
| style="text-align:right;" | 3087.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1999-0
 +
| style="text-align:right;" | 3322.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1996-0
 +
| style="text-align:right;" | 3080.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 1996-0
 +
| style="text-align:right;" | 1161.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2007-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2006-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2008-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2009-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2001-0
 +
| style="text-align:right;" | 3410.0
 +
| style="text-align:right;" | 261.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2005-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2000-0
 +
| style="text-align:right;" | 3611.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2002-0
 +
| style="text-align:right;" | 3695.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2004-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 365.0
 +
|-
 +
|-
 +
| 2003-0
 +
| style="text-align:right;" | 923.0
 +
| style="text-align:right;" | 365.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2012-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2013-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2011-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2010-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2014-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2015-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2016-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2017-0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
| style="text-align:right;" | 0.0
 +
|-
 +
|-
 +
| 2018-0
 
| style="text-align:right;" | 0.0
 
| style="text-align:right;" | 0.0
 
| style="text-align:right;" | 0.0
 
| style="text-align:right;" | 0.0
Line 256: Line 499:
 
  | date = 2015-05-26
 
  | date = 2015-05-26
 
  | url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Production
 
  | url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Production
 +
| accessdate = 2015-05-27 }}</ref>
 +
== Inspection Data ==
 +
{| class="wikitable sortable" width="95%"
 +
!scope="col" | INSPECTION ID
 +
!scope="col" | DATE
 +
!scope="col" | DESCRIPTION
 +
!scope="col" | COMMENT
 +
!scope="col" | VIOLATION ID
 +
!scope="col" | VIOLATION CODE
 +
!scope="col" | VIOLATION COMMENT
 +
|-
 +
| 555745
 +
| 1991-05-02
 +
| No Violations Noted
 +
| SITE RESTORED; TANK
 +
|
 +
|
 +
|
 +
|-
 +
|-
 +
| 562589
 +
| 1993-01-20
 +
| No Violations Noted
 +
| E&S OK; TANK
 +
|
 +
|
 +
|
 +
|-
 +
|-
 +
| 566639
 +
| 1993-12-02
 +
| Violation(s) Noted
 +
| SITE UNSTABLE;TANK
 +
| 102615
 +
| 102.4 - Failure to minimize accelerated erosion, implement E&S plan, maintain E&S controls. Failure to stabilize site until total site restoration under OGA Sec 206(c)(d)
 +
| SITE UNSTABLE
 +
|-
 +
|-
 +
| 566677
 +
| 1994-06-02
 +
| No Violations Noted
 +
| VIOLATIONS CORRECTED; E&S OK
 +
|
 +
|
 +
|
 +
|-
 +
|-
 +
| 579780
 +
| 1998-10-20
 +
| No Violations Noted
 +
| TAG, TANK, E&S OK
 +
|
 +
|
 +
|
 +
|-
 +
|}
 +
For data sources see<ref>{{cite web
 +
| title = Oil and Gas Historical Inspection Report
 +
| publisher = [[Pennsylvania Department of Environmental Protection]]
 +
| date = 2015-05-26
 +
| url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Inspections
 
  | accessdate = 2015-05-27 }}</ref>
 
  | accessdate = 2015-05-27 }}</ref>
 
== Waste Data ==
 
== Waste Data ==
Line 268: Line 572:
 
!scope="col" | FACILITY CITY
 
!scope="col" | FACILITY CITY
 
!scope="col" | FACILITY STATE
 
!scope="col" | FACILITY STATE
 +
|-
 +
| 1992-0
 +
| Brine
 +
| style="text-align:right;" | 58.0
 +
| Bbl
 +
|
 +
|
 +
|
 +
|
 +
|
 +
|-
 +
|-
 +
| 1993-0
 +
| Brine
 +
| style="text-align:right;" | 31.0
 +
| Bbl
 +
|
 +
|
 +
|
 +
|
 +
|
 +
|-
 +
|-
 +
| 1991-0
 +
| Brine
 +
| style="text-align:right;" | 97.0
 +
| Bbl
 +
|
 +
|
 +
|
 +
|
 +
|
 +
|-
 
|-
 
|-
 
| 1996-0
 
| 1996-0
| BRINE
+
| Brine
 
| style="text-align:right;" | 2.0
 
| style="text-align:right;" | 2.0
 
| Bbl
 
| Bbl
| INJECTION DISPOSAL WELL
+
| Injection Disposal Well
 
| 1788201
 
| 1788201
|  
+
| SPENCER LAND #2
 
|  
 
|  
 
|  
 
|  
Line 281: Line 618:
 
|-
 
|-
 
| 1996-0
 
| 1996-0
| BRINE
+
| Brine
 
| style="text-align:right;" | 5.0
 
| style="text-align:right;" | 5.0
 
| Bbl
 
| Bbl
| INJECTION DISPOSAL WELL
+
| Injection Disposal Well
 
| 1788201
 
| 1788201
|  
+
| SPENCER LAND #2
 
|  
 
|  
 
|  
 
|  
Line 292: Line 629:
 
|-
 
|-
 
| 2000-0
 
| 2000-0
| BRINE
+
| Brine
 
| style="text-align:right;" | 62.0
 
| style="text-align:right;" | 62.0
 
| Bbl
 
| Bbl
| INJECTION DISPOSAL WELL
+
| Injection Disposal Well
 
| 1788201
 
| 1788201
|  
+
| SPENCER LAND #2
 
|  
 
|  
 
|  
 
|  
Line 303: Line 640:
 
|-
 
|-
 
| 2002-0
 
| 2002-0
| BRINE
+
| Brine
 
| style="text-align:right;" | 42.0
 
| style="text-align:right;" | 42.0
 
| Bbl
 
| Bbl
| INJECTION DISPOSAL WELL
+
| Injection Disposal Well
 
| PAS2D902BCLE-02
 
| PAS2D902BCLE-02
|  
+
| SPENCER LAND CO #2 DISP WELL (033-22059)
 
|  
 
|  
 
|  
 
|  
Line 314: Line 651:
 
|-
 
|-
 
| 2009-0
 
| 2009-0
| BRINE
+
| Brine
 
| style="text-align:right;" | 20.0
 
| style="text-align:right;" | 20.0
 
| Bbl
 
| Bbl
| INJECTION DISPOSAL WELL
+
| Injection Disposal Well
 
| PAS2D205BCLE
 
| PAS2D205BCLE
| IRVIN A-19 FMLY FEE A 19 DISP WELL (033-00053)
+
| IRVIN A SALT WATER DISPOSAL
| MAHAFFEY
+
|  
| PA
+
|  
 
|-
 
|-
 
|-
 
|-
 
| 2011-0
 
| 2011-0
| PRODUCED FLUID
+
| Produced Fluid (in Barrels)
 
| style="text-align:right;" | 25.0
 
| style="text-align:right;" | 25.0
 
| Bbl
 
| Bbl
Line 336: Line 673:
 
|-
 
|-
 
| 2011-0
 
| 2011-0
| PRODUCED FLUID
+
| Produced Fluid (in Barrels)
 
| style="text-align:right;" | 45.0
 
| style="text-align:right;" | 45.0
 
| Bbl
 
| Bbl
Line 352: Line 689:
 
  | url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Waste
 
  | url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Waste
 
  | accessdate = 2015-05-26 }}</ref>
 
  | accessdate = 2015-05-26 }}</ref>
== Inspection Data ==
 
{| class="wikitable sortable" width="95%"
 
!scope="col" | INSPECTION ID
 
!scope="col" | DATE
 
!scope="col" | DESCRIPTION
 
!scope="col" | COMMENT
 
!scope="col" | VIOLATION ID
 
!scope="col" | VIOLATION CODE
 
!scope="col" | VIOLATION_COMMENT
 
|-
 
| 555745
 
| 1991-05-02
 
| No Violations Noted
 
| SITE RESTORED; TANK
 
|
 
|
 
|
 
|-
 
|-
 
| 562589
 
| 1993-01-20
 
| No Violations Noted
 
| E&S OK; TANK
 
|
 
|
 
|
 
|-
 
|-
 
| 566639
 
| 1993-12-02
 
| Violation(s) Noted
 
| SITE UNSTABLE;TANK
 
| 102615
 
| 102.4 - Failure to minimize accelerated erosion, implement E&S plan, maintain E&S controls. Failure to stabilize site until total site restoration under OGA Sec 206(c)(d)
 
| SITE UNSTABLE
 
|-
 
|-
 
| 566677
 
| 1994-06-02
 
| No Violations Noted
 
| VIOLATIONS CORRECTED; E&S OK
 
|
 
|
 
|
 
|-
 
|-
 
| 579780
 
| 1998-10-20
 
| No Violations Noted
 
| TAG, TANK, E&S OK
 
|
 
|
 
|
 
|-
 
|}
 
For data sources see<ref>{{cite web
 
| title = Oil and Gas Historical Inspection Report
 
| publisher = [[Pennsylvania Department of Environmental Protection]]
 
| date = 2015-05-26
 
| url = http://wellwiki.org/wiki/Pennsylvania_Oil_and_Gas_Data_Sources#Inspections
 
| accessdate = 2015-05-27 }}</ref>
 
 
== References ==
 
== References ==
 
{{reflist}}
 
{{reflist}}
 
__NOEDITSECTION__
 
__NOEDITSECTION__
 
[[Category:Wells]]
 
[[Category:Wells]]

Revision as of 01:27, 13 June 2019

Well Details

Well ID: 37-063-30045
Loading map...
County: Indiana
Municipality: Cherryhill Township
Operator Name: EXCO RESOURCES PA LLC
Well Pad ID:
Farm/Lease Name: CBC-MCHENRY 1
First Permit Date: 1990-07-19
Last Permit Date: 1990-07-19
Spud Date: 1990-08-02
Unconventional: No
Configuration: Vertical
Well Status: ACTIVE
Violations: 1
Latitude: 40.66256
Longitude: -79.034334

Production Data

PERIOD GAS QUANTITY GAS PRODUCTION DAYS CONDENSATE QUANTITY CONDENSATE PRODUCTION DAYS OIL QUANTITY OIL PRODUCTION DAYS
1991-0 18476.0 365.0 0.0 0.0 0.0 0.0
1992-0 10405.0 365.0 0.0 0.0 0.0 0.0
1993-0 9172.0 365.0 0.0 0.0 0.0 0.0
1996-0 3080.0 365.0 0.0 0.0 0.0 0.0
1996-0 1161.0 365.0 0.0 0.0 0.0 0.0
1997-0 3534.0 365.0 0.0 0.0 0.0 0.0
1998-0 3087.0 365.0 0.0 0.0 0.0 0.0
1999-0 3322.0 365.0 0.0 0.0 0.0 0.0
2000-0 3611.0 365.0 0.0 0.0 0.0 0.0
2001-0 3410.0 261.0 0.0 0.0 0.0 0.0
2002-0 3695.0 365.0 0.0 0.0 0.0 0.0
2003-0 923.0 365.0 0.0 0.0 0.0 0.0
2004-0 0.0 365.0 0.0 0.0 0.0 365.0
2005-0 0.0 365.0 0.0 0.0 0.0 0.0
2006-0 0.0 0.0 0.0 0.0 0.0 0.0
2007-0 0.0 0.0 0.0 0.0 0.0 0.0
2008-0 0.0 0.0 0.0 0.0 0.0 0.0
2009-0 0.0 0.0 0.0 0.0 0.0 0.0
2010-0 0.0 0.0 0.0 0.0 0.0 0.0
2011-0 0.0 0.0 0.0 0.0 0.0 0.0
2012-0 0.0 0.0 0.0 0.0 0.0 0.0
2013-0 0.0 0.0 0.0 0.0 0.0 0.0
2014-0 0.0 0.0 0.0 0.0 0.0 0.0
1992-0 10405.0 365.0 0.0 0.0 0.0 0.0
1993-0 9172.0 365.0 0.0 0.0 0.0 0.0
1991-0 18476.0 365.0 0.0 0.0 0.0 0.0
1997-0 3534.0 365.0 0.0 0.0 0.0 0.0
1998-0 3087.0 365.0 0.0 0.0 0.0 0.0
1999-0 3322.0 365.0 0.0 0.0 0.0 0.0
1996-0 3080.0 365.0 0.0 0.0 0.0 0.0
1996-0 1161.0 365.0 0.0 0.0 0.0 0.0
2007-0 0.0 0.0 0.0 0.0 0.0 0.0
2006-0 0.0 0.0 0.0 0.0 0.0 0.0
2008-0 0.0 0.0 0.0 0.0 0.0 0.0
2009-0 0.0 0.0 0.0 0.0 0.0 0.0
2001-0 3410.0 261.0 0.0 0.0 0.0 0.0
2005-0 0.0 365.0 0.0 0.0 0.0 0.0
2000-0 3611.0 365.0 0.0 0.0 0.0 0.0
2002-0 3695.0 365.0 0.0 0.0 0.0 0.0
2004-0 0.0 365.0 0.0 0.0 0.0 365.0
2003-0 923.0 365.0 0.0 0.0 0.0 0.0
2012-0 0.0 0.0 0.0 0.0 0.0 0.0
2013-0 0.0 0.0 0.0 0.0 0.0 0.0
2011-0 0.0 0.0 0.0 0.0 0.0 0.0
2010-0 0.0 0.0 0.0 0.0 0.0 0.0
2014-0 0.0 0.0 0.0 0.0 0.0 0.0
2015-0 0.0 0.0 0.0 0.0 0.0 0.0
2016-0 0.0 0.0 0.0 0.0 0.0 0.0
2017-0 0.0 0.0 0.0 0.0 0.0 0.0
2018-0 0.0 0.0 0.0 0.0 0.0 0.0

For data sources see[1]

Inspection Data

INSPECTION ID DATE DESCRIPTION COMMENT VIOLATION ID VIOLATION CODE VIOLATION COMMENT
555745 1991-05-02 No Violations Noted SITE RESTORED; TANK
562589 1993-01-20 No Violations Noted E&S OK; TANK
566639 1993-12-02 Violation(s) Noted SITE UNSTABLE;TANK 102615 102.4 - Failure to minimize accelerated erosion, implement E&S plan, maintain E&S controls. Failure to stabilize site until total site restoration under OGA Sec 206(c)(d) SITE UNSTABLE
566677 1994-06-02 No Violations Noted VIOLATIONS CORRECTED; E&S OK
579780 1998-10-20 No Violations Noted TAG, TANK, E&S OK

For data sources see[2]

Waste Data

PERIOD TYPE QUANTITY UNITS DISPOSAL METHOD WASTE FACILITY PERMIT ID WASTE FACILITY NAME FACILITY CITY FACILITY STATE
1992-0 Brine 58.0 Bbl
1993-0 Brine 31.0 Bbl
1991-0 Brine 97.0 Bbl
1996-0 Brine 2.0 Bbl Injection Disposal Well 1788201 SPENCER LAND #2
1996-0 Brine 5.0 Bbl Injection Disposal Well 1788201 SPENCER LAND #2
2000-0 Brine 62.0 Bbl Injection Disposal Well 1788201 SPENCER LAND #2
2002-0 Brine 42.0 Bbl Injection Disposal Well PAS2D902BCLE-02 SPENCER LAND CO #2 DISP WELL (033-22059)
2009-0 Brine 20.0 Bbl Injection Disposal Well PAS2D205BCLE IRVIN A SALT WATER DISPOSAL
2011-0 Produced Fluid (in Barrels) 25.0 Bbl CENTRALIZED TREATMENT PLANT FOR RECYCLE PA0095443 CREEKSIDE TREATMENT FACILITY CREEKSIDE PA
2011-0 Produced Fluid (in Barrels) 45.0 Bbl CENTRALIZED TREATMENT PLANT FOR RECYCLE PA0095273 FLUID RECOVERY SERVICE JOSEPHINE FACILITY JOSEPHINE PA

For data sources see[3]

References