Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1983__43_154951, author = {Bernd Herzog}, title = {A criterion for tangential flatness.}, journal = {Manuscripta mathematica}, pages = {219--228}, publisher = {mathdoc}, volume = {43}, year = {1983}, zbl = {0521.13011}, url = {http://geodesic.mathdoc.fr/item/MM2_1983__43_154951/} }
Bernd Herzog. A criterion for tangential flatness.. Manuscripta mathematica, Tome 43 (1983), pp. 219-228. http://geodesic.mathdoc.fr/item/MM2_1983__43_154951/