Security implications of password discretization for click-based graphical passwords. - Bin B. Zhu; Dongchen Wei; Maowei Yang; Jeff Yan (WWW, 2013)

Security Analyses of Click-based Graphical Passwords via Image Point Memorability. - Bin B. Zhu; Jeff Yan; Dongchen Wei; Maowei Yang (CCS, 2014)

Captcha as Graphical Passwords - A New Security Primitive Based on Hard AI Problems. - Bin B. Zhu; Jeff Yan; Guanbo Bao; Maowei Yang; Ning Xu (IEEE Trans. Inf. Forensics Secur., 2014)