TY JOUR TI Using the Markov attribution model in marketing management KW marketing attribution KW Markov model KW digital marketing KW multichannel customer journeys KW marketing budget allocation KW channel performance evaluation KW probabilistic modeling KW media mix JO Vestnik of Astrakhan State Technical University. Series: Economics AU Kudinov, P.. PY 2026 IS 2026 PB Astrakhan State Technical University