Florian Hess Igor Shparlinski On the Linear Complexity and Multidimensional Distribution of Congruential Generators over Elliptic Curves. 111-117 2005 35 Des. Codes Cryptography 1 http://www.springerlink.com/index/10.1007/s10623-003-6153-0 db/journals/dcc/dcc35.html#HessS05