@article{10_4064_ap_60_3_249_253,
     author = {Jolanta Przybycin},
     title = {Nonlinear eigenvalue problems for fourth order ordinary differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {249--253},
     publisher = {mathdoc},
     volume = {60},
     number = {3},
     year = {1994},
     doi = {10.4064/ap-60-3-249-253},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-60-3-249-253/}
}