TY  - JOUR
AU  - Anatoliy P. Petravchuk
AU  - Oleksandr G. Iena
TI  - On closed rational functions in several variables
JO  - Algebra and discrete mathematics
PY  - 2007
SP  - 115
EP  - 124
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2007_2_a10/
LA  - en
ID  - ADM_2007_2_a10
ER  -