2S and 3S State Masses and decay constants of heavy-flavour mesons in a non-relativistic QCD potential model with three-loop effects in V-schemeRashidul Hoque, B. J. Hazarika and D. K. ChoudhuryEur. Phys. J. C, 80 12 (2020) 1213DOI: https://doi.org/10.1140/epjc/s10052-020-08756-4