@article{MM2_1973__8_154146,
     author = {Heinrich Steinlein},
     title = {\"Uber die verallgemeinerten {Fixpunktindizes} von {Iterierten} verdichtender {Abbildungen.}},
     journal = {Manuscripta mathematica},
     pages = {251--266},
     publisher = {mathdoc},
     volume = {8},
     year = {1973},
     zbl = {0252.47065},
     url = {http://geodesic.mathdoc.fr/item/MM2_1973__8_154146/}
}