TY  - JOUR
AU  - P. Erdös
TI  - Some remarks on the iterates of the φ and σ functions
JO  - Colloquium Mathematicum
PY  - 1967
SP  - 195
EP  - 202
VL  - 17
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-17-2-195-202/
DO  - 10.4064/cm-17-2-195-202
LA  - en
ID  - 10_4064_cm_17_2_195_202
ER  -