%0 Journal Article %A Gabriele Bonanno %T Positive solutions to nonlinear singular second order boundary value problems %J Annales Polonici Mathematici %D 1996 %P 237-251 %V 64 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-64-3-237-251/ %R 10.4064/ap-64-3-237-251 %G en %F 10_4064_ap_64_3_237_251