Sigidov, Yuriy I., Maria S. Rybyantseva, Alexandr A. Adamenko, and Elena A. Yarushkina. 2016. “Methodological Aspects of Depreciation As an Economic Category”. International Journal of Economics and Financial Issues 6 (1S):88-95. https://econjournals.com./index.php/ijefi/article/view/2359.