TY  - JOUR
AU  - Y.-F. Pétermann
TI  - Changes of sign of error terms related to Euler's function and to divisor functions II
JO  - Acta Arithmetica
PY  - 1988
SP  - 321
EP  - 333
VL  - 51
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa-51-4-321-333/
DO  - 10.4064/aa-51-4-321-333
LA  - en
ID  - 10_4064_aa_51_4_321_333
ER  -