@article{RSMUP_1976__55__209_0,
     author = {Grioli, Antonio Claudio},
     title = {Sul principio di indifferenza materiale},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {209--217},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {55},
     year = {1976},
     mrnumber = {489175},
     zbl = {0376.73007},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1976__55__209_0/}
}