TY  - JOUR
AU  - S. S. Marchenkov
TI  - Positively closed classes of three-valued logic generated by one-place functions
JO  - Diskretnaya Matematika
PY  - 2009
SP  - 37
EP  - 44
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DM_2009_21_3_a4/
LA  - ru
ID  - DM_2009_21_3_a4
ER  -