TY  - JOUR
AU  - A. P. Markeev
TI  - On a Change of Variables in Lagrange’s Equations
JO  - Russian journal of nonlinear dynamics
PY  - 2022
SP  - 473
EP  - 480
VL  - 18
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2022_18_4_a1/
LA  - en
ID  - ND_2022_18_4_a1
ER  -