TY  - JOUR
AU  - A. V. Greshnov
TI  - About estimates of stability of contraction~mappings on~the~first Heisenberg group in the fixed point theorem
JO  - Vestnik rossijskih universitetov. Matematika
PY  - 2025
SP  - 15
EP  - 27
VL  - 30
IS  - 149
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VTAMU_2025_30_149_a1/
LA  - ru
ID  - VTAMU_2025_30_149_a1
ER  -