@phdthesis{THESE_1914__2__1_0,
     author = {Chapelon, Jacques},
     title = {Sur les relations entre les nombres des classes de formes quadratiques binaires de d\'eterminant n\'egatif},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {2},
     year = {1914},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1914__2__1_0/}
}