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@article{ARM_1975__11_2_a1, author = {R\'ab, Milo\v{s}}, title = {Bounds for solutions of the equation $[p(t)x']'+q(t)x=h(t,x,x')$}, journal = {Archivum mathematicum}, pages = {79--84}, publisher = {mathdoc}, volume = {11}, number = {2}, year = {1975}, mrnumber = {0412520}, zbl = {0365.34042}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1975__11_2_a1/} }
Ráb, Miloš. Bounds for solutions of the equation $[p(t)x']'+q(t)x=h(t,x,x')$. Archivum mathematicum, Tome 11 (1975) no. 2, pp. 79-84. http://geodesic.mathdoc.fr/item/ARM_1975__11_2_a1/