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@article{10_4064_cm_13_1_73_79, author = {F. M. Filipczak}, title = {On the derivative of a discontinuous function}, journal = {Colloquium Mathematicum}, pages = {73--79}, publisher = {mathdoc}, volume = {13}, number = {1}, year = {1964}, doi = {10.4064/cm-13-1-73-79}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-13-1-73-79/} }
F. M. Filipczak. On the derivative of a discontinuous function. Colloquium Mathematicum, Tome 13 (1964) no. 1, pp. 73-79. doi : 10.4064/cm-13-1-73-79. http://geodesic.mathdoc.fr/articles/10.4064/cm-13-1-73-79/
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