TY JOUR TI Optimization of Collection and Transportation Logistics Chains for Low-Grade Wood and Sawmill Residues for Bioenergy Plants in the Arkhangelsk Region: Modeling Based on Mixed Integer Linear Optimization KW bioenergy KW logistics chains KW sawmill residues KW mixed integer linear optimization (MILP) KW Arkhangelsk region KW multimodal transport KW seasonal constraints KW geospatial analysis KW Northern Dvina KW forest industry complex JO Scientific Research and Development. Economics AU Spirichev, V.D. AU Plastinin, A.V. PY 2026 IS 14 PB INFRA-M Academic Publishing LLC.