@article{RSMUP_1972__48__105_0,
     author = {Grimson, R. C.},
     title = {Enumeration of symmetric arrays with different row sums},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {105--112},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {48},
     year = {1972},
     mrnumber = {332504},
     zbl = {0276.05014},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1972__48__105_0/}
}