%0 Journal Article %A J. Schröder %T Upper and Lower Bounds for Solutions of Generalized Two-Point Boundary Value Problems. %J Numerische Mathematik %D 1974 %P 433-457 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1974__23_132319/ %F NUMA_1974__23_132319