Katvickis, Artūras, Eligijus Sakalauskas, and Kastytis Ratkevičius. “Key Agreement Protocol in Infinite Semigroup Representation Level”. Lietuvos matematikos rinkinys 47, no. spec. (December 20, 2007): 168–172. Accessed November 21, 2024. https://journals.vu.lt./LMR/article/view/19915.