Khan, M. N. H., Siddiqui, F., Das, A., & Rahman, M. Z. (2014). Pin number detection from mobile phone scratch card using OCR on android platform and build an application for balance recharge. BRAC University.

Khan, Md Nazrul Hasan, Faizan Siddiqui, Amit Das, and Mohammad Zahidur Rahman. Pin Number Detection from Mobile Phone Scratch Card Using OCR on Android Platform and Build an Application for Balance Recharge. BRAC University, 2014.

Khan, Md Nazrul Hasan, et al. Pin Number Detection from Mobile Phone Scratch Card Using OCR on Android Platform and Build an Application for Balance Recharge. BRAC University, 2014.