Abhinav Srivastava Amlan Kundu Shamik Sural Arun K. Majumdar Credit Card Fraud Detection Using Hidden Markov Model. 37-48 2008 5 IEEE Trans. Dependable Sec. Comput. 1 http://doi.ieeecomputersociety.org/10.1109/TDSC.2007.70228 db/journals/tdsc/tdsc5.html#SrivastavaKSM08