Winding Numbers on Surfaces, I.
Chillingworth, D.B.J.
Mathematische Annalen, Tome 196 (1972), p. 218-249 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1972-01-01
EUDML-ID : urn:eudml:doc:162255 
@article{GDZPPN002306174,
     title = {Winding Numbers on Surfaces, I.},
     journal = {Mathematische Annalen},
     volume = {196},
     year = {1972},
     pages = {218-249},
     zbl = {0221.57001},
     url = {http://dml.mathdoc.fr/item/GDZPPN002306174}
}

Chillingworth, D.B.J. Winding Numbers on Surfaces, I.. Mathematische Annalen, Tome 196 (1972) pp. 218-249. http://gdmltest.u-ga.fr/item/GDZPPN002306174/