Study of QCD generalized ghost dark energy in FRW universe Mahasweta Biswas, Ujjal Debnath, Shounak Ghosh and B. K. Guha Eur. Phys. J. C, 79 8 (2019) 659 Published online: 07 August 2019 DOI: 10.1140/epjc/s10052-019-7147-z