@article{GDZPPN00208127X, title = {Einschliessung ebener Kurven.}, journal = {Elemente der Mathematik}, volume = {40}, year = {1985}, pages = {98-99}, zbl = {0575.52004}, url = {http://dml.mathdoc.fr/item/GDZPPN00208127X} }
Wieacker, J.A.; Schneider, R. Einschliessung ebener Kurven.. Elemente der Mathematik, Tome 40 (1985) pp. 98-99. http://gdmltest.u-ga.fr/item/GDZPPN00208127X/