%0 Journal Article %A Farlow, S.J. %T Periodic solutions of nonlinear boundary value problems of the second kind %J Portugaliae mathematica %D 1973 %P 25-37 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1973__32_1_115186/ %G en %F PORMA_1973__32_1_115186