TY  - JOUR
AU  - Bureš, Jarolím
TI  - Free constructions of 2-structures
JO  - Czechoslovak Mathematical Journal
PY  - 1976
SP  - 20
EP  - 29
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1976.101369/
DO  - 10.21136/CMJ.1976.101369
LA  - en
ID  - 10_21136_CMJ_1976_101369
ER  -