TY  - JOUR
AU  - D. P. Polozkov
TI  - A study of generalized interpretations of the plane geometry of Lobachevskii and its geodesic lines
JO  - Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta
PY  - 1951
SP  - 9
EP  - 14
VL  - 148
IS  - 148
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UZMU_1951_148_148_a1/
LA  - ru
ID  - UZMU_1951_148_148_a1
ER  -