TY  - JOUR
AU  - A. M. Vershik
TI  - Many-valued measure-preserving mappings (polymorphisms) and Markovian operators
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1977
SP  - 26
EP  - 61
VL  - 72
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1977_72_a1/
LA  - ru
ID  - ZNSL_1977_72_a1
ER  -