Title
Telling humans and computers apart automatically
Abstract
How lazy cryptographers do AI.
Year
DOI
Venue
2004
10.1145/966389.966390
Commun. ACM
Keywords
Field
DocType
lazy cryptographers
Programming language,Computer science,Human–computer interaction,CAPTCHA,Reverse Turing test
Journal
Volume
Issue
ISSN
47
2
0001-0782
Citations 
PageRank 
References 
320
23.51
5
Authors
3
Search Limit
100320
Name
Order
Citations
PageRank
Luis von Ahn13461346.66
manuel blum247951351.57
John Langford35392353.60