TY  - JOUR
AU  - N. L. Poliakov
AU  - M. V. Shamolin
TI  - On symmetric closed class of function preserving every unary predicate
JO  - Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ
PY  - 2013
SP  - 61
EP  - 73
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VSGU_2013_6_a6/
LA  - ru
ID  - VSGU_2013_6_a6
ER  -