TY  - JOUR
AU  - Weinian Zhang
TI  - PM functions, their characteristic intervals and iterative roots
JO  - Annales Polonici Mathematici
PY  - 1996
SP  - 119
EP  - 128
VL  - 65
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-65-2-119-128/
DO  - 10.4064/ap-65-2-119-128
LA  - en
ID  - 10_4064_ap_65_2_119_128
ER  -