%0 Journal Article
%A I. Yu. Polekhin
%T The~existence proof for forced oscillations by adding dissipative forces in the~example of a~spherical pendulum
%J Teoretičeskaâ i matematičeskaâ fizika
%D 2022
%P 295-305
%V 211
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_2022_211_2_a8/
%G ru
%F TMF_2022_211_2_a8