@article{10_4064_ap_47_2_179_188, author = {Krystyna Sk\'ornik}, title = {On functions with vanishing local derivative}, journal = {Annales Polonici Mathematici}, pages = {179--188}, publisher = {mathdoc}, volume = {47}, number = {2}, year = {1986}, doi = {10.4064/ap-47-2-179-188}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-47-2-179-188/} }