Hossain, F. and Das, S. 2015. DEVELOPMENT OF FOKKINK-FOKKINK-WANG’S GENERATING FUNCTION FOR FFW(n). International Journal of Research -GRANTHAALAYAH. 3, 2 (Feb. 2015), 69–76. DOI:https://doi.org/10.29121/granthaalayah.v3.i2.2015.3041.