TY JOUR TI Digital B2B Platforms for Supplier Search: Functionality, Interaction Models and Comparative Analysis of Aggregators Under Geo-Economic Fragmentation KW supplier aggregators KW digital procurement KW platform governance KW transaction costs KW risk management KW geo-economic fragmentation JO Journal of Applied Research AU Kozikova, D.A. AU Vinokurov, O.V. AU Mazin, A.S. PY 2026 IS 0 PB ITBO University