SINHA, R. and SINGH, D. 1993. ON GENERALIZED $(N,p_n,q_n)$ SUMMABILITY OF JACOBI AND LAGUERRE SERIES. Tamkang Journal of Mathematics. 24, 4 (Dec. 1993), 373–381. DOI:https://doi.org/10.5556/j.tkjm.24.1993.4509.