THE ASSORTMENT STRUCTURE AND THE PRICE LEVELS AS A FACTOR OF MARKETING CHANNEL COMPETITIVENESS–EMPIRICAL EVIDENCE FROM THE REPUBLIC OF SERBIA. (2016). Ekonomski Vjesnik Econviews - Review of Contemporary Business, Entrepreneurship and Economic Issues, 29(2), 21-32. https://ojs.srce.hr/index.php/ekonomski-vjesnik/article/view/4696