Pantelimon Stanica Soo Hak Sung Improving the nonlinearity of certain balanced Boolean functions with good local and global avalanche characteristics. 167-172 2001 79 Inf. Process. Lett. 4 db/journals/ipl/ipl79.html#StanicaS01 http://dx.doi.org/10.1016/S0020-0190(00)00221-0