@phdthesis{THESE_1937__197__1_0,
     author = {Weinstein, Alexandre},
     title = {\'Etude des spectres des \'equations aux d\'eriv\'ees partielles de la th\'eorie des plaques \'elastiques},
     series = {Th\`eses de l'entre-deux-guerres},
     year = {1937},
     number = {197},
     language = {fr},
     url = {https://www.numdam.org/item/THESE_1937__197__1_0/}
}