@article{SPHM_1991___2_A1_0,
     author = {Cartier, Pierre},
     title = {La musique des sph\`eres de {Kepler}},
     journal = {S\'eminaire de Philosophie et Math\'ematiques},
     pages = {1--23},
     publisher = {IREM Paris-Nord},
     number = {2},
     year = {1991},
     language = {fr},
     url = {http://archive.numdam.org/item/SPHM_1991___2_A1_0/}
}