Ivan Bliznets, Danil Sagunov. Lower Bounds for the Happy Coloring Problems. In Ding-Zhu Du, Zhenhua Duan, Cong Tian, editors, Computing and Combinatorics - 25th International Conference, COCOON 2019, Xi'an, China, July 29-31, 2019, Proceedings. Volume 11653 of Lecture Notes in Computer Science, pages 490-502, Springer, 2019. [doi]
Abstract is missing.