@article{SJL_1962-1963____177_0,
     author = {Lewy, Hans},
     title = {Sur les \'equations atypiques},
     journal = {S\'eminaire sur les \'equations aux d\'eriv\'ees partielles},
     pages = {177--180},
     year = {1962-1963},
     publisher = {Coll\`ege de France},
     language = {fr},
     url = {https://www.numdam.org/item/SJL_1962-1963____177_0/}
}