@article{AIF_1960__10__271_0,
     author = {Reinhart, Bruce L.},
     title = {The winding number on two manifolds},
     journal = {Annales de l'Institut Fourier},
     pages = {271--283},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {10},
     year = {1960},
     doi = {10.5802/aif.100},
     mrnumber = {22 #8517},
     zbl = {0097.16203},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.100/}
}