Yankiv, Marta, Roman Mykytyuk, and Andrii Gukaliuk. “Omnichannel Digital Marketing in the Postal and Logistics Sector: Strategic Functions and the Role of Leadership Visibility”. International Journal of Economic Sciences 15, no. 1 (September 25, 2025): 1–18. Accessed October 19, 2025. https://ijes-journal.org/journal/article/view/199.