TY  - JOUR
AU  - M. B. Abrosimov
AU  - A. A. Dolgov
TI  - On directed acyclic exact extensions
JO  - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
PY  - 2010
SP  - 83
EP  - 88
VL  - 10
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ISU_2010_10_1_a13/
LA  - ru
ID  - ISU_2010_10_1_a13
ER  -