@article{GDZPPN001172174,
title = {Upper and Lower Bounds for Solutions of Generalized Two-Point Boundary Value Problems.},
journal = {Numerische Mathematik},
volume = {22},
year = {1974},
pages = {433-457},
zbl = {0293.65058},
url = {http://dml.mathdoc.fr/item/GDZPPN001172174}
}
Schröder, J. Upper and Lower Bounds for Solutions of Generalized Two-Point Boundary Value Problems.. Numerische Mathematik, Tome 22 (1974) pp. 433-457. http://gdmltest.u-ga.fr/item/GDZPPN001172174/