00675naa#a2200169#i#450# EN\\bibl\119089 20260404232039.6 2222-7962 20260330b2026####ek#y0engy0150####ca RU Two-Echelon Transportation Problem and Transshipment Nodes in Forest Industry Production: An Optimization Model Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2026 17 с. Journal article local Лесное хозяйство. 338.439.223 Rogulin Rodion Sergeevich anni.editorum.ru