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@article{MZ_1962__78_170005, author = {H. A. Antonsiewicsz}, title = {An inequality for approximate solutions of ordinary differential equations.}, journal = {Mathematische Zeitschrift}, pages = {44--52}, publisher = {mathdoc}, volume = {78}, year = {1962}, url = {http://geodesic.mathdoc.fr/item/MZ_1962__78_170005/} }
H. A. Antonsiewicsz. An inequality for approximate solutions of ordinary differential equations.. Mathematische Zeitschrift, Tome 78 (1962), pp. 44-52. http://geodesic.mathdoc.fr/item/MZ_1962__78_170005/