Ki, S. , Kim, D. , Cho, S. , Chung, S. , Kim, J. , Hong, Y. , Park, C. , Kwon, D. , Kang, M. , Kim, Y. , Yoon, Y. (2008). 'Reliable Face Alignment Using Two-Stage AAM'. World Academy of Science, Engineering and Technology, Open Science Index 17, International Journal of Computer and Information Engineering, 2(5), 1682 - 1686.