TY  - JOUR
AU  - D. A. Grigoryan
TI  - On main canonical notion of  $\delta$-reduction
JO  - Proceedings of the Yerevan State University. Physical and mathematical sciences
PY  - 2018
SP  - 191
EP  - 199
VL  - 52
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UZERU_2018_52_3_a5/
LA  - en
ID  - UZERU_2018_52_3_a5
ER  -