TY  - JOUR
AU  - D. S. Gorshkov
TI  - Geometry of Lobachevskii in connection with certain questions of arithmetic
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1977
SP  - 39
EP  - 85
VL  - 67
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1977_67_a1/
LA  - ru
ID  - ZNSL_1977_67_a1
ER  -