@article{ZAA_1999__18_3_48331,
     author = {H\^oǹg Th\'ai Nguy\^e\~n},
     title = {Existence theorems for boundary value problems for strongly nonlinear elliptic systems.},
     journal = {Zeitschrift f\"ur Analysis und ihre Anwendungen},
     pages = {585--610},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1999},
     zbl = {0931.35053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZAA_1999__18_3_48331/}
}