TY  - JOUR
AU  - Artur Rubin
AU  - Jean Rubin
TI  - Extended operations and relations on the class of ordinal numbers
JO  - Fundamenta Mathematicae
PY  - 1969
SP  - 227
EP  - 242
VL  - 65
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-65-2-227-242/
DO  - 10.4064/fm-65-2-227-242
LA  - en
ID  - 10_4064_fm_65_2_227_242
ER  -