@article{10_4064_ap_49_1_45_51,
     author = {Jan B\k{e}czek},
     title = {On the existence of solutions of some non-linear {Dirichlet} problems},
     journal = {Annales Polonici Mathematici},
     pages = {45--51},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {1988},
     doi = {10.4064/ap-49-1-45-51},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-49-1-45-51/}
}