@phdthesis{THESE_1931__126__1_0,
     author = {Durand, Georges},
     title = {Sur une g\'en\'eralisation des surfaces convexes},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {126},
     year = {1931},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1931__126__1_0/}
}