@phdthesis{THESE_1928__80__1_0,
     author = {Delsarte, Jean},
     title = {Les rotations fonctionnelles},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {80},
     year = {1928},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1928__80__1_0/}
}