TY  - JOUR
AU  - Pilz, Günter F.
TI  - Characterization of all order relations in direct sums of ordered groups.
JO  - Collectanea mathematica
PY  - 1972
SP  - 85
EP  - 90
VL  - 23
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CLTM_1972_1972_1_a3/
LA  - en
ID  - CLTM_1972_1972_1_a3
ER  -