TY  - JOUR
AU  - Bernard, Otto
TI  - On contexts of direct products, ordinal sums and ordinal products
JO  - Acta Universitatis Carolinae. Mathematica et Physica
PY  - 2003
SP  - 3
EP  - 15
VL  - 44
IS  - 2
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/AUCMP_2003__44_2_a0/
LA  - en
ID  - AUCMP_2003__44_2_a0
ER  -