@article{RSMUP_1968__41__227_0,
     author = {Singal, R. P.},
     title = {Certain sums of double hypergeometric series},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {227--234},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {41},
     year = {1968},
     mrnumber = {249676},
     zbl = {0185.29802},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1968__41__227_0/}
}