@article{AIHPC_1989__6_2_139_0,
     author = {Long, Yiming},
     title = {On the density of the range for some nonlinear operators},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {139--151},
     publisher = {Gauthier-Villars},
     volume = {6},
     number = {2},
     year = {1989},
     mrnumber = {991875},
     zbl = {0757.34034},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPC_1989__6_2_139_0/}
}