Hristova, Katya, and Kaloyan Haralampiev. “The Impact of Transport Costs on Product Cost and Final Price”. Vanguard Scientific Instruments in Management 22, no. 1 (June 30, 2026): 35-50. Accessed July 17, 2026. https://www.vsim-journal.info/index.php?journal=vsim&page=article&op=view&path[]=585.