TY  - JOUR
AU  - Alexander Häussler
TI  - Defining cardinal addition by ≤-formulas
JO  - Fundamenta Mathematicae
PY  - 1983
SP  - 195
EP  - 205
VL  - 115
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-115-3-195-205/
DO  - 10.4064/fm-115-3-195-205
LA  - en
ID  - 10_4064_fm_115_3_195_205
ER  -