@article{MM2_1984__47_155013,
     author = {Carlos Prieto},
     title = {Coincidence index for fiber-preserving maps an approach to stable cohomotopy.},
     journal = {Manuscripta mathematica},
     pages = {233--250},
     year = {1984},
     volume = {47},
     zbl = {0551.55002},
     url = {http://geodesic.mathdoc.fr/item/MM2_1984__47_155013/}
}