@article{RSMUP_1973__49__237_0,
     author = {Shatoff, Larry D.},
     title = {Binary multiples of combinatorial geometries - {II}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {237--240},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {49},
     year = {1973},
     mrnumber = {345853},
     zbl = {0293.05018},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1973__49__237_0/}
}