@article{RSMUP_1983__69__135_0,
     author = {Cardin, Franco},
     title = {A generalized theory of classical mechanics for the two body problem},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {135--151},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {69},
     year = {1983},
     mrnumber = {716990},
     zbl = {0552.70004},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1983__69__135_0/}
}