@article{GDZPPN00207740X, title = {\"Uber hebbare Unstetigkeiten.}, journal = {Elemente der Mathematik}, volume = {25}, year = {1970}, pages = {107-113}, zbl = {0199.10401}, url = {http://dml.mathdoc.fr/item/GDZPPN00207740X} }
Fricker, Francois. Über hebbare Unstetigkeiten.. Elemente der Mathematik, Tome 25 (1970) pp. 107-113. http://gdmltest.u-ga.fr/item/GDZPPN00207740X/