Quadruply charmed dibaryons as heavy quark symmetry partners of the DDK bound state Tian-Wei Wu, Ming-Zhu Liu, Li-Sheng Geng, Emiko Hiyama, Manuel Pavon Valderrama and Wen-Ling Wang Eur. Phys. J. C, 80 9 (2020) 901 Published online: 29 September 2020 DOI: 10.1140/epjc/s10052-020-08483-w