Kovalchuk, Anatolyy     The use of quadratic forms to increase strength of the encryption of binary affine loop transformation [Текст] / Anatolyy Kovalchuk, Dmytro Peleshko, Y. Rashkevych // Computer science and information technologies CSIT 2010 : proc. of the V Intern. sci. and techn. conf., 14-16 Oct. 2010, Lviv, Ukraine / Lviv Polytechnic Nat. Univ. — Lviv : Publ. House Vezha & Co, 2010. — P. 19-21.