@article{RSMUP_1976__55__91_0,
     author = {Balli, Raffaele},
     title = {Precessioni ad asse verticale del solido pesante},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {91--104},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {55},
     year = {1976},
     mrnumber = {521353},
     zbl = {0359.70009},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1976__55__91_0/}
}