@phdthesis{THESE_1922__34__1_0,
     author = {Beghin, Henri},
     title = {\'Etude th\'eorique des compas gyrostatiques {Anschutz} et {Sperry}},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {34},
     year = {1922},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1922__34__1_0/}
}