TY  - JOUR
AU  - Darnel, Michael R.
TI  - Cyclic extensions of the Medvedev ordered groups
JO  - Czechoslovak Mathematical Journal
PY  - 1993
SP  - 193
EP  - 204
VL  - 43
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128399/
DO  - 10.21136/CMJ.1993.128399
LA  - en
ID  - 10_21136_CMJ_1993_128399
ER  -