On the (Im)Possibility of Practical and Secure Nonlinear Filters and Combiners.

An Braeken Joseph Lano On the (Im)Possibility of Practical and Secure Nonlinear Filters and Combiners. 159-174 2005 conf/sacrypt/2005 Selected Areas in Cryptography http://dx.doi.org/10.1007/11693383_11 db/conf/sacrypt/sacrypt2005.html#BraekenL05