Yuriy Tarannikov Peter Korolev Anton Botev Autocorrelation Coefficients and Correlation Immunity of Boolean Functions. 460-479 2001 conf/asiacrypt/2001 ASIACRYPT http://link.springer.de/link/service/series/0558/bibs/2248/22480460.htm db/conf/asiacrypt/asiacrypt2001.html#TarannikovKB01