Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1987__59_155242, author = {Michela Brundu}, title = {Normal and tangential flatness.}, journal = {Manuscripta mathematica}, pages = {131--146}, publisher = {mathdoc}, volume = {59}, year = {1987}, zbl = {0625.13008}, url = {http://geodesic.mathdoc.fr/item/MM2_1987__59_155242/} }
Michela Brundu. Normal and tangential flatness.. Manuscripta mathematica, Tome 59 (1987), pp. 131-146. http://geodesic.mathdoc.fr/item/MM2_1987__59_155242/