@article{Kuznetsov_2019 author = {A. A. Kuznetsov and A. V. Potii and N. A. Poluyanenko and I. V. Stelnik}, title = {NONLINEAR FUNCTIONS OF COMPLICATION FOR SYMMETRIC STREAM CIPHERS}, journal = {Telecommunications and Radio Engineering}, issn = {0040-2508}, year = {2019}, volume = {78}, number = {9}, pages = {743--458} }