Mubeen, S. ., S. . Iqbal, and G. . Rahman. “Contiguous Function Relations and an Integral Representation for Appell K-Series F_(1,k)”. International Journal of Mathematical Research, vol. 4, no. 2, Jan. 2015, pp. 53-63, doi:10.18488/journal.24/2015.4.2/24.2.53.63.