Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1973__204_162462, author = {Otto Gerstner and Ludger Kaup}, title = {Homotopiegruppen von {Hyperfl\"achenschnitten.}}, journal = {Mathematische Annalen}, pages = {105--130}, publisher = {mathdoc}, volume = {204}, year = {1973}, zbl = {0243.57012}, url = {http://geodesic.mathdoc.fr/item/MAN_1973__204_162462/} }
Otto Gerstner; Ludger Kaup. Homotopiegruppen von Hyperflächenschnitten.. Mathematische Annalen, Tome 204 (1973), pp. 105-130. http://geodesic.mathdoc.fr/item/MAN_1973__204_162462/