@phdthesis{THESE_1924__47__1_0,
     author = {Lalan, Victor},
     title = {Sur les propri\'et\'es infinit\'esimales projectives des vari\'et\'es \`a trois dimensions},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {47},
     year = {1924},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1924__47__1_0/}
}