Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1982__57_139902, author = {Gilbert Levitt and R\'emi Langevin}, title = {Courbure totale des feuilletages des surfaces.}, journal = {Commentarii mathematici Helvetici}, pages = {175--195}, publisher = {mathdoc}, volume = {57}, year = {1982}, zbl = {0502.53026}, url = {http://geodesic.mathdoc.fr/item/CMH_1982__57_139902/} }
Gilbert Levitt; Rémi Langevin. Courbure totale des feuilletages des surfaces.. Commentarii mathematici Helvetici, Tome 57 (1982), pp. 175-195. http://geodesic.mathdoc.fr/item/CMH_1982__57_139902/