TY  CONF
TI  GEOMETRIC METHOD FOR ANALYZING THE EXISTENCE OF A PERIODIC SOLUTION TO A DIFFERENTIAL EQUATION
KW  differential equation
KW  periodic solution
KW  shift operator
JO  OPERATOR EQUATIONS AND SOME RELATED ISSUES IN APPLIED MATHEMATICS
AU  Korotkih, A.S.
PY  2026
PB  FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov