TY  - JOUR
AU  - Tomášek, Stanislav
TI  - On a certain class of $\Lambda$-structures. I
JO  - Czechoslovak Mathematical Journal
PY  - 1970
SP  - 1
EP  - 18
VL  - 20
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100940/
DO  - 10.21136/CMJ.1970.100940
LA  - en
ID  - 10_21136_CMJ_1970_100940
ER  -