Title:
Journal of the ACM
Abbreviated Title:
J. ACM
Publisher:
Association for Computing Machinery (ACM)
ISSN
(Print):
00045411
Publication date
(Print):
January
1973
Volume: 20
Issue: 1
Pages: 160-187
Article
DOI: 10.1145/321738.321750
SO-VID: 66ff89c4-13b0-4fa9-84f7-84b58b455dbc