Yolchyan, M.A. “QUASI-BOOLEAN POWER OF ALGEBRAS AND IDEMPOTENT ALGEBRAS”. Proceedings of the YSU A: Physical and Mathematical Sciences 53, no. 3 (250) (December 16, 2019): 170–176. Accessed July 20, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol53_no3_2019_pp170-176.