@phdthesis{THESE_1915__8__R1_0,
     author = {Besserve, A.},
     title = {Le cercle et les surfaces cercl\'ees en g\'eom\'etrie conforme},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {8},
     year = {1915},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1915__8__R1_0/}
}