Voir la notice de l'article provenant de la source Proyecto DML-E: Biblioteca Digital de Matemáticas
@article{GAMA_1976_1976_1_a3, author = {Gonz\'alez, M. O.}, title = {A spherical representation of the real directional derivative.}, journal = {Gaceta matem\'atica}, pages = {25-29}, publisher = {mathdoc}, volume = {28}, number = {1-2}, year = {1976}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GAMA_1976_1976_1_a3/} }
González, M. O. A spherical representation of the real directional derivative.. Gaceta matemática, Tome 28 (1976) no. 1-2. http://geodesic.mathdoc.fr/item/GAMA_1976_1976_1_a3/