@phdthesis{BJHTUP11_1984__0164__P0_0,
     author = {Xu, Chao-Jiang},
     title = {R\'egularit\'e des solutions des \'equations aux d\'eriv\'ees partielles non lin\'eaires},
     series = {Th\`eses d'Orsay},
     publisher = {Universit\'e de Paris-Sud Centre d'Orsay},
     number = {164},
     year = {1984},
     language = {fr},
     url = {http://archive.numdam.org/item/BJHTUP11_1984__0164__P0_0/}
}