TY JOUR TI Improving the model of interinstitutional interaction to enhance the economic efficiency of maritime transport in the logistics services market KW maritime transport KW logistics services market KW interinstitutional interaction KW economic efficiency KW transaction costs KW systemic coordination KW interaction matrix KW transport system stakeholders KW sustainable development of maritime transport JO Vestnik of Astrakhan State Technical University. Series: Economics AU Chernov, O.. PY 2025 IS 2025 PB Astrakhan State Technical University