@article{GDZPPN002311895,
title = {Repulsive Fixed Points of Multivalued Transformations and the Fixed Point Index.},
journal = {Mathematische Annalen},
volume = {217},
year = {1975},
pages = {9-18},
zbl = {0297.55005},
url = {http://dml.mathdoc.fr/item/GDZPPN002311895}
}
Fenske, Christian C.; Peitgen, Heinz-Otto. Repulsive Fixed Points of Multivalued Transformations and the Fixed Point Index.. Mathematische Annalen, Tome 217 (1975) pp. 9-18. http://gdmltest.u-ga.fr/item/GDZPPN002311895/