@article{ASNSP_1940_2_9_3-4_187_0,
     author = {Butlewski, Zygmunt},
     title = {Sur les int\'egrales oscillantes et born\'ees d'une \'equation diff\'erentielle du second ordre},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {187--200},
     publisher = {Scuola normale superiore},
     volume = {2e s{\'e}rie, 9},
     number = {3-4},
     year = {1940},
     mrnumber = {5973},
     zbl = {0024.03403},
     language = {fr},
     url = {http://archive.numdam.org/item/ASNSP_1940_2_9_3-4_187_0/}
}