Security for GIS N-tier Architecture. - Michael Govorov; Youry Khmelevsky; Vasiliy Ustimenko; Alexei Khorev (SDH, 2004)

On semigroups of multivariate transformations constructed in terms of time dependent linguistic graphs and solutions of Post Quantum Multivariate Cryptography. - Vasiliy Ustimenko (IACR Cryptol. ePrint Arch., 2021)