Michail, H. , Thanasoulis, V. , Panagiotakopoulos, G. , Kakarountas, A. , Goutis, C.. "Efficient Pipelined Hardware Implementation of RIPEMD-160 Hash Function". World Academy of Science, Engineering and Technology, Open Science Index 14, International Journal of Electrical and Computer Engineering, (2008), 2(2), 183 - 186.