TY  - JOUR
AU  - I. Yu. Polekhin
TI  - The~existence proof for forced oscillations by adding dissipative forces in the~example of a~spherical pendulum
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 2022
SP  - 295
EP  - 305
VL  - 211
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_2022_211_2_a8/
LA  - ru
ID  - TMF_2022_211_2_a8
ER  -