@article{RSMUP_1959__29__227_0,
     author = {Bressan, Aldo},
     title = {Sul moto dei sistemi anolonomi a vincoli variabili},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {227--241},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {29},
     year = {1959},
     mrnumber = {129183},
     zbl = {0093.17002},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1959__29__227_0/}
}