--- a/latex/cpdt.bib	Fri Oct 28 18:26:16 2011 -0400
+++ b/latex/cpdt.bib	Mon Oct 31 14:24:16 2011 -0400
@@ -286,3 +286,19 @@
  pages = {11--20},
  year = {2007},
 }
+
+@inproceedings{modules,
+ author = {MacQueen, David},
+ title = {Modules for {Standard ML}},
+ booktitle = {Proceedings of the 1984 ACM Symposium on LISP and Functional Programming},
+ year = {1984},
+ pages = {198--207},
+} 
+
+@inproceedings{typeclasses,
+ author = {Wadler, P. and Blott, S.},
+ title = {How to make ad-hoc polymorphism less ad hoc},
+ booktitle = {Proceedings of the 16th ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages},
+ year = {1989},
+ pages = {60--76},
+}