Simek, Libor, Vaclav Cempirek, Andrej David, and Andrea Galierikova. “Changes of Strategic Pricing Policy of Logistics Service Providers in Financial Macroeconomic Instability”. Asian Economic and Financial Review 11, no. 12 (December 24, 2021): 950–964. Accessed April 29, 2024. http://archive.aessweb.com/index.php/5002/article/view/4392.