Title:
Communications of the ACM
Abbreviated Title:
Commun. ACM
Publisher:
Association for Computing Machinery (ACM)
ISSN
(Print):
00010782
Publication date
(Print):
April
1989
Volume: 32
Issue: 4
Pages: 444-458
Article
DOI: 10.1145/63334.63337
SO-VID: e621e269-db93-46cf-8c3b-4eade9780f07