@phdthesis{THESE_1939__227__1_0,
     author = {Delange, Hubert},
     title = {Sur la convergence des s\'eries de polyn\^omes de la forme $\Sigma a_n P_n(z)$ et sur certaines suites de polyn\^omes},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {227},
     year = {1939},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1939__227__1_0/}
}