TY CONF TI A MULTIPARAMETRIC FAMILY OF SOLUTIONS TO THE VOLTERRA INTEGRAL EQUATION IN BANACH SPACE KW eigenvector KW inverse operator KW functional space KW characteristic number KW partial solution JO OPERATOR EQUATIONS AND SOME RELATED ISSUES IN APPLIED MATHEMATICS AU Sapronov, I.V. AU Zenina, V.V. AU Smirnova, E.V. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov