00503nam a22001577a 4500003000500000038001600005050001100021082001100032100003000043245004400073260003200117300002400149500010100173563001500274856005600289NUST  aNoman Tariq  aMSEE-3  aMSEE-3  aM. Amir Asim Khan Jalwana  aAnalysis of strength of CAPTCHA schemes  aIslamabadbNUST-SEECSc2015  a46b27cm.+eCD-ROM.  aSupervisors:Dr. Muhammad Murtaza Khan, Dr. Syed Ali Khayam, Dr. Rehan Hafiz, Dr. Khawar Khurshid  aHard Cover  uhttp://10.250.8.41:8080/xmlui/handle/123456789/8394