TY  - JOUR
AU  - Havel, Václav
TI  - Construction of certain systems with two compositions
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1965
SP  - 413
EP  - 428
VL  - 06
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1965__6_4_a3/
LA  - en
ID  - CMUC_1965__6_4_a3
ER  -