@article{CMH_1934__6_138614,
     author = {L. Kollros and J. Marchand},
     title = {Sur un th\'eor\`eme de {Steiner.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {154--158},
     publisher = {mathdoc},
     volume = {6},
     year = {1934},
     url = {http://geodesic.mathdoc.fr/item/CMH_1934__6_138614/}
}