Merge pull request #61 from ltratt/efficient_smalltalk80

Add the classic Efficient Smalltalk '80 paper.

Author: vext01

softdev.bib

@@ -2542,3 +2542,13 @@ @inproceedings{wilson17calltoarms
     month = Feb,
     doi = "10.14722/ndss.2017.23108"
 }
+
+@inproceedings{deutsch84efficient,
+    author = "L. Peter Deutsch and Allan M. Schiffman",
+    title = "Efficient Implementation of the {Smalltalk}-80 System",
+    booktitle = "POPL",
+    year = 1984,
+    month = Jan,
+    pages = "297--302",
+    doi = 10.1145/800017.800542,
+}