@phdthesis{THESE_1935__175__1_0,
     author = {Kurepa, Georges},
     title = {Ensembles ordonn\'ees et ramifi\'es},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {175},
     year = {1935},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1935__175__1_0/}
}