@article{10_4064_fm_69_3_213_217,
     author = {Harold Bell},
     title = {Fixed points, index, and degree for some set valued functions},
     journal = {Fundamenta Mathematicae},
     pages = {213--217},
     publisher = {mathdoc},
     volume = {69},
     number = {3},
     year = {1970},
     doi = {10.4064/fm-69-3-213-217},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-69-3-213-217/}
}