TY JOUR TI Quasi-periodic solutions of the second equation kind of generalized analytic functions KW Quasi-periodic solutions - a function doubly - analytical functions JO Actual directions of scientific researches of the XXI century: theory and practice AU Safarov, D.. AU Gayurov, A.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov