Sahakyan, Albert Kh., and Rafayel R. Kamalian. “INTERVAL VERTEX-COLORINGS OF CACTUS GRAPHS WITH RESTRICTIONS ON VERTICES”. Proceedings of the YSU A: Physical and Mathematical Sciences 55, no. 3 (256) (November 5, 2021): 160–168. Accessed November 22, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol55_no3_2021_pp160-168.