%0 Journal Article %A Jolanta Przybycin %T Existence and uniqueness theorems for fourth-order boundary value problems %J Annales Polonici Mathematici %D 1997 %P 59-64 %V 67 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-67-1-59-64/ %R 10.4064/ap-67-1-59-64 %G en %F 10_4064_ap_67_1_59_64