Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MO_2002_20_1_a4, author = {V. V. Tsukerman}, title = {Nabla-calculus, continued}, journal = {Matemati\v{c}eskoe obrazovanie}, pages = {42--52}, publisher = {mathdoc}, volume = {20}, number = {1}, year = {2002}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MO_2002_20_1_a4/} }
V. V. Tsukerman. Nabla-calculus, continued. Matematičeskoe obrazovanie, Tome 20 (2002) no. 1, pp. 42-52. http://geodesic.mathdoc.fr/item/MO_2002_20_1_a4/