@phdthesis{THESE_1934__159__1_0,
     author = {Mirguet, Jean},
     title = {Nouvelles recherches sur les notions infinit\'esimales directes du premier ordre},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {159},
     year = {1934},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1934__159__1_0/}
}