@phdthesis{THESE_1920__21__1_0,
     author = {Haum\'e-H\'erouard},
     title = {Contribution \`a l'\'etude des surfaces r\'eelles rapport\'ees aux coordonn\'ees curvilignes de leurs lignes de courbure},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {21},
     year = {1920},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1920__21__1_0/}
}