Pankratova I. A., Agibalov G. P. «About 2-cascade finite automata cryptographic generators and their cryptanalysis» // Applied Discrete Mathematics 2017. №35 C.38-47
Pankratova I. A., Semenova E. V., Borovkova I. V. «Cryptanalysis of 2-cascade finite automata generator with functional key» // Applied Discrete Mathematics 2018. №42 C.48-56