TY  - JOUR
AU  - Heinrich Steinlein
TI  - On the Index of Approximating Sets of Periodic Points.
JO  - Manuscripta mathematica
PY  - 1996
SP  - 15
EP  - 34
VL  - 89
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1996__89_3_156147/
ID  - MM2_1996__89_3_156147
ER  -