Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision eeb0767cec7eef8d463f33fcf957d5a78f34339d)
+++ doc/bibliography/pl.bib	(revision 57b0b1f192554162db27e934c43896aef9bb507f)
@@ -5439,4 +5439,15 @@
 }
 
+@inproceedings{Conchon07,
+  keywords = {persistent array, union-find},
+  contributer = {a3moss@uwaterloo.ca},
+  title={A persistent union-find data structure},
+  author={Conchon, Sylvain and Filli{\^a}tre, Jean-Christophe},
+  booktitle={Proceedings of the 2007 workshop on Workshop on ML},
+  pages={37--46},
+  year={2007},
+  organization={ACM}
+}
+
 @article{poly,
     keywords	= {Poly, Standard ML, Russell, persistence},
@@ -6360,4 +6371,46 @@
 }
 
+@article{Baker78,
+ keywords = {Algol display, FUNARG's, Lisp 1.5, deep binding, environment trees, multiprogramming, shallow binding},
+ contributer = {a3moss@uwaterloo.ca},
+ author = {Baker,Jr., Henry G.},
+ title = {Shallow Binding in Lisp 1.5},
+ journal = {Commun. ACM},
+ issue_date = {July 1978},
+ volume = {21},
+ number = {7},
+ month = jul,
+ year = {1978},
+ issn = {0001-0782},
+ pages = {565--569},
+ numpages = {5},
+ url = {http://doi.acm.org.proxy.lib.uwaterloo.ca/10.1145/359545.359566},
+ doi = {10.1145/359545.359566},
+ acmid = {359566},
+ publisher = {ACM},
+ address = {New York, NY, USA}
+}
+
+@article{Baker91,
+ keywords = {shallow binding, functional arrays},
+ contributer = {a3moss@uwaterloo.ca},
+ author = {Baker, Henry G.},
+ title = {Shallow Binding Makes Functional Arrays Fast},
+ journal = {SIGPLAN Not.},
+ issue_date = {Aug. 1991},
+ volume = {26},
+ number = {8},
+ month = aug,
+ year = {1991},
+ issn = {0362-1340},
+ pages = {145--147},
+ numpages = {3},
+ url = {http://doi.acm.org.proxy.lib.uwaterloo.ca/10.1145/122598.122614},
+ doi = {10.1145/122598.122614},
+ acmid = {122614},
+ publisher = {ACM},
+ address = {New York, NY, USA},
+}
+
 @techreport{Adve95,
     keywords	= {shared memory, consistency models},