@misc{cryptoeprint:2007:207, author = {Claude Carlet, Khoongming Khoo, Chu-Wee Lim, Chuan-Wen Loe}, title = {On an Improved Correlation Analysis of Stream Ciphers Using Muti-Output Boolean Functions and the Related Generalized Notion of Nonlinearity}, howpublished = {Cryptology ePrint Archive, Report 2007/207}, year = {2007}, url = {http://eprint.iacr.org/2007/207}, }