%0 Journal Article %A D. A. Grigoryan %T On the uniqueness of $\beta\delta$-normal form of typed $\lambda$-terms for the canonical notion of $\delta$-reduction %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2019 %P 37-46 %V 53 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2019_53_1_a5/ %G en %F UZERU_2019_53_1_a5