The S- and P-wave fully charmed tetraquark states and their radial excitationsGuo-Liang Yu, Zhen-Yu Li, Zhi-Gang Wang, Lu Jie and Yan MengEur. Phys. J. C, 83 5 (2023) 416DOI: https://doi.org/10.1140/epjc/s10052-023-11445-7