@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/} }