TY  - JOUR
AU  - Miccoli, Maria Maddalena
AU  - Pondělíček, Bedřich
TI  - On $\alpha$-ideals and generalized $\alpha$-ideals in semigroups
JO  - Czechoslovak Mathematical Journal
PY  - 1989
SP  - 522
EP  - 527
VL  - 39
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102324/
DO  - 10.21136/CMJ.1989.102324
LA  - en
ID  - 10_21136_CMJ_1989_102324
ER  -