@article{AIF_1997__47_5_1523_0,
     author = {G\'omez-Mont, Xavier and Marde\v{s}i\'c, Pavao},
     title = {The index of a vector field tangent to a hypersurface and the signature of the relative jacobian determinant},
     journal = {Annales de l'Institut Fourier},
     pages = {1523--1539},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {47},
     number = {5},
     year = {1997},
     doi = {10.5802/aif.1608},
     mrnumber = {99g:32062},
     zbl = {0891.32013},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.1608/}
}