Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision d6b7d1d7f426ac21626324aad96b05fc80d0ab89)
+++ doc/bibliography/pl.bib	(revision b0fcd0e9c5cb8cfb0efe57e6fb351703839a2a65)
@@ -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},