TY  - JOUR
AU  - Ježek, Jaroslav
AU  - Kepka, Tomáš
AU  - Němec, Petr
TI  - Commutative semigroups that are nil of index 2 and have no irreducible elements
JO  - Mathematica Bohemica
PY  - 2008
SP  - 1
EP  - 7
VL  - 133
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.2008.133941/
DO  - 10.21136/MB.2008.133941
LA  - en
ID  - 10_21136_MB_2008_133941
ER  -