Rutkauskas, Aleksandras Vytautas, Viktorija Stasytytė, and Adomas Ginevičius. “Optimization of the Structure of Marketing Complex Costs As a Means of Business Sustainable Development”. Ekonomika 78 (December 1, 2007): 115–133. Accessed April 27, 2025. https://journals.vu.lt./ekonomika/article/view/17616.