@article{RSMUP_1964__34__200_0,
     author = {Carlitz, L.},
     title = {Another {Saasch\"utzian} theorem for double series},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {200--203},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {34},
     year = {1964},
     mrnumber = {166407},
     zbl = {0133.03203},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1964__34__200_0/}
}