@phdthesis{THESE_1934__161__1_0, author = {Poli, Louis}, title = {Sur les propri\'et\'es infinit\'esimales des mouvements \`a deux param\`etres}, series = {Th\`eses de l'entre-deux-guerres}, year = {1934}, number = {161}, language = {fr}, url = {https://www.numdam.org/item/THESE_1934__161__1_0/} }