@article{BSMF_1875-1876__4__87_1,
     author = {Cahen},
     title = {Ombre port\'ee par un tore sur lui-m\^eme},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {87--88},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {4},
     year = {1875-1876},
     doi = {10.24033/bsmf.63},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.63/}
}