TY  - JOUR
AU  - Marshall, Murray
TI  - Spaces of Orderings IV
JO  - Canadian journal of mathematics
PY  - 1980
SP  - 603
EP  - 627
VL  - 32
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-047-0/
DO  - 10.4153/CJM-1980-047-0
ID  - 10_4153_CJM_1980_047_0
ER  -