TY CONF TI VOICE INTERFACES IN MOBILE APPLICATIONS FOR ELDERLY USERS KW voice interfaces KW mobile applications KW elderly users KW accessibility KW speech recognition KW speech synthesis KW user interface JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Kravtsov, V.S. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov