%0 Journal Article %A Qingliu Yao %T A class of singular fourth-order boundary value problems with nonhomogeneous nonlinearity %J Annales Polonici Mathematici %D 2013 %P 311-325 %V 109 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap109-3-6/ %R 10.4064/ap109-3-6 %G en %F 10_4064_ap109_3_6