@book{MSM_1931__50__1_0,
     author = {Saltykow, N.},
     title = {M\'ethodes classiques d'int\'egration des \'equations aux d\'eriv\'ees partielles du premier ordre \`a une fonction inconnue},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {50},
     year = {1931},
     zbl = {0003.11303},
     language = {fr},
     url = {http://www.numdam.org/item/MSM_1931__50__1_0/}
}