TY  - JOUR
AU  - S. Feferman
AU  - R. Vaught
TI  - The first order properties of products of algebraic systems
JO  - Fundamenta Mathematicae
PY  - 1959
SP  - 57
EP  - 103
VL  - 47
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-47-1-57-103/
DO  - 10.4064/fm-47-1-57-103
LA  - en
ID  - 10_4064_fm_47_1_57_103
ER  -