TY  - JOUR
AU  - Ralph Alexander
TI  - Density and multiplicative structure of sets of integers
JO  - Acta Arithmetica
PY  - 1966
SP  - 321
EP  - 332
VL  - 12
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa-12-4-321-332/
DO  - 10.4064/aa-12-4-321-332
LA  - en
ID  - 10_4064_aa_12_4_321_332
ER  -