@article{AIF_1959__9__111_0, author = {Bauer, Friedrich-Wilhelm}, title = {Tangentialstrukturen}, journal = {Annales de l'Institut Fourier}, pages = {111--146}, publisher = {Institut Fourier}, volume = {9}, year = {1959}, doi = {10.5802/aif.90}, mrnumber = {114217}, zbl = {0137.42402}, language = {de}, url = {http://www.numdam.org/articles/10.5802/aif.90/} }