@article{10_4064_ap_46_1_27_34,
     author = {Jan Bochenek},
     title = {Existence of a minimal solution and a maximal solution of a nonlinear elliptic boundary value problem of the fourth order},
     journal = {Annales Polonici Mathematici},
     pages = {27--34},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1985},
     doi = {10.4064/ap-46-1-27-34},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-46-1-27-34/}
}