TY  - JOUR
AU  - M. B. Abrosimov
AU  - A. A. Matorin
TI  - Reliability analysis of graphical CAPTCHA-systems by the example of KCAPTCHA
JO  - Prikladnaâ diskretnaâ matematika
PY  - 2011
SP  - 40
EP  - 41
IS  - 13
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PDM_2011_13_a21/
LA  - ru
ID  - PDM_2011_13_a21
ER  -