TY JOUR TI Influence of factors of recreational digression on biological diversity of oak gallflies (Cynipoidae, Hymenoptera) in forest and park zones of Voronezh KW gallflies KW coppice oak forests KW phytophagous insects KW recreational digression KW greenbelt KW stages of recreational digression JO Forestry Engineering Journal AU Kazbanova, I.M. PY 2015 IS 5 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov