TY  - JOUR
AU  - Florian Luca
AU  - Carl Pomerance
TI  - Acknowledgment of priority: “On some problems of Mąkowski–Schinzel and Erdős concerning the arithmetical functions $\phi$ and $\sigma$”  (Colloq. Math. 92 (2002), 111–130)
JO  - Colloquium Mathematicum
PY  - 2012
SP  - 139
EP  - 139
VL  - 126
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm126-1-10/
DO  - 10.4064/cm126-1-10
LA  - en
ID  - 10_4064_cm126_1_10
ER  -