@phdthesis{THESE_1944__260__1_0,
     author = {Ch\^atelet, Fran\c{c}ois},
     title = {Variations sur un th\`eme de {H.} {Poincar\'e}},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {260},
     year = {1944},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1944__260__1_0/}
}