@article{RSMUP_1932__3__16_0,
     author = {Vitali, Giuseppe},
     title = {Sulle derivazioni covarianti},
     journal = {Rendiconti del Seminario matematico della R. Universit\`a di Padova},
     pages = {16--27},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {3},
     year = {1932},
     language = {it},
     url = {http://archive.numdam.org/item/RSMUP_1932__3__16_0/}
}