%0 Journal Article %A Peterson, A. C. %T On the Monotone Nature of Boundary Value Functions for nth-Order Differential Equations %J Canadian mathematical bulletin %D 1972 %P 253-258 %V 15 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-046-1/ %R 10.4153/CMB-1972-046-1 %F 10_4153_CMB_1972_046_1