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@article{10_4064_cm_54_1_139_142, author = {H. H. Pu and H. W. Pu}, title = {On level sets of approximate derivative and approximate symmetric derivative}, journal = {Colloquium Mathematicum}, pages = {139--142}, publisher = {mathdoc}, volume = {54}, number = {1}, year = {1987}, doi = {10.4064/cm-54-1-139-142}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-54-1-139-142/} }
TY - JOUR AU - H. H. Pu AU - H. W. Pu TI - On level sets of approximate derivative and approximate symmetric derivative JO - Colloquium Mathematicum PY - 1987 SP - 139 EP - 142 VL - 54 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-54-1-139-142/ DO - 10.4064/cm-54-1-139-142 LA - en ID - 10_4064_cm_54_1_139_142 ER -
%0 Journal Article %A H. H. Pu %A H. W. Pu %T On level sets of approximate derivative and approximate symmetric derivative %J Colloquium Mathematicum %D 1987 %P 139-142 %V 54 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-54-1-139-142/ %R 10.4064/cm-54-1-139-142 %G en %F 10_4064_cm_54_1_139_142
H. H. Pu; H. W. Pu. On level sets of approximate derivative and approximate symmetric derivative. Colloquium Mathematicum, Tome 54 (1987) no. 1, pp. 139-142. doi : 10.4064/cm-54-1-139-142. http://geodesic.mathdoc.fr/articles/10.4064/cm-54-1-139-142/
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