Gorodilova A. A. «From cryptanalysis to cryptographic property of a Boolean function» // Applied Discrete Mathematics 2016. №3(33) C.16-44
Logachev O.A. «ON VALUES OF AFFINITY LEVEL FOR ALMOST ALL BOOLEAN FUNCTIONS» // 2010. №3(9) C.17-21
Cheremushkin A. V. «On quadratic form rank distribution and asymptotic bounds of affinity level» // Applied Discrete Mathematics. Supplement 2016. №9 C.36-38