@article{10_4064_fm_88_2_145_156,
     author = {Helga Schirmer},
     title = {A {Nielsen} number for fixed points and near points of small multifunctions},
     journal = {Fundamenta Mathematicae},
     pages = {145--156},
     publisher = {mathdoc},
     volume = {88},
     number = {2},
     year = {1975},
     doi = {10.4064/fm-88-2-145-156},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-88-2-145-156/}
}