Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1990__45_6_141492, author = {H. Herold}, title = {Charakterisierung der {Differentiale} mit geradlinigen {Isoklinen.}}, journal = {Elemente der Mathematik}, pages = {145--149}, publisher = {mathdoc}, volume = {45}, number = {6}, year = {1990}, zbl = {0717.34003}, url = {http://geodesic.mathdoc.fr/item/ELMA_1990__45_6_141492/} }
H. Herold. Charakterisierung der Differentiale mit geradlinigen Isoklinen.. Elemente der Mathematik, Tome 45 (1990) no. 6, pp. 145-149. http://geodesic.mathdoc.fr/item/ELMA_1990__45_6_141492/