Grigoryan, A.Ye. “INNER AUTOMORPHISMS OF NON-COMMUTATIVE ANALOGUES OF THE ADDITIVE GROUP OF RATIONAL NUMBERS”. Proceedings of the YSU A: Physical and Mathematical Sciences 49, no. 1 (236) (March 16, 2015): 12–14. Accessed May 14, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol49_no1_2015_pp012-014.