Peteshova, Tetiana, and Maryna Kasatkina. “Determination of Spheres of Forming and Realization of Competitive Advantages of Enterprises of Chemical Industry”. Skhid, no. 4(118) (August 24, 2013): 70–73. Accessed April 19, 2024. https://skhid.kubg.edu.ua/article/view/16527.