TY  - JOUR
AU  - Chronowski, Antoni
TI  - Some properties of $\alpha$-ideals and generalized $\alpha$-ideals, $n$-semigroups and $n$-groups
JO  - Czechoslovak Mathematical Journal
PY  - 1994
SP  - 39
EP  - 46
VL  - 44
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128453/
DO  - 10.21136/CMJ.1994.128453
LA  - en
ID  - 10_21136_CMJ_1994_128453
ER  -