TY  - JOUR
AU  - A. L. Semenov
TI  - On certain extensions of the arithmetic of addition of natural numbers
JO  - Izvestiya. Mathematics 
PY  - 1980
SP  - 401
EP  - 418
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1980_15_2_a8/
LA  - en
ID  - IM2_1980_15_2_a8
ER  -