@article{AFST_1930_3_22__171_0,
     author = {A. L\={u}sis},
     title = {Sur la recherche des fonctions permutables de premi\`ere esp\`ece},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {171--183},
     year = {1930},
     publisher = {Gauthier-Villars, Imprimeur-\'Editeur},
     address = {Paris},
     volume = {3e s{\'e}rie, 22},
     doi = {10.5802/afst.359},
     language = {fr},
     url = {https://afst.centre-mersenne.org/articles/10.5802/afst.359/}
}