TY  - JOUR
AU  - Zelinka, Bohdan
TI  - Tolerance in algebraic structures
JO  - Czechoslovak Mathematical Journal
PY  - 1970
SP  - 179
EP  - 183
VL  - 20
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100959/
DO  - 10.21136/CMJ.1970.100959
LA  - en
ID  - 10_21136_CMJ_1970_100959
ER  -