Singularités de Klein - I
Séminaire sur les singularités des surfaces (1976-1977), Exposé no. 2, 8 p. 
@article{SSS_1976-1977____A3_0,
     author = {Pinkham, Henry},
     title = {Singularit\'es de Klein - I},
     journal = {S\'eminaire sur les singularit\'es des surfaces},
     note = {talk:2},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1976-1977},
     zbl = {0459.14008},
     language = {fr},
     url = {www.numdam.org/item/SSS_1976-1977____A3_0/}
}
Pinkham, H. Singularités de Klein - I. Séminaire sur les singularités des surfaces (1976-1977), Exposé no. 2, 8 p. http://www.numdam.org/item/SSS_1976-1977____A3_0/

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