Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision eaeba796aa6e1310797b8fc4f35f88d8d4a941a1)
+++ doc/bibliography/pl.bib	(revision e37d45e150125376464e65e5245ef0c290e54d7c)
@@ -6820,5 +6820,5 @@
     booktitle	= {Proceedings of the 9th ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages},
     location	= {Albuquerque, New Mexico},
-    series	= {POPL'82}
+    series	= {POPL'82},
     year	= 1982,
     pages	= {207-212},