Conceptual Approach to Assessing the Economic Efficiency of Diversification of Entrepreneurial Activity Ivan Tekutyev Conceptual Approach to Assessing the Economic Efficiency of Diversification of Entrepreneurial Activity // Russian Journal of Entrepreneurship. — 2010. — № 7-2 (163). — p. 68-72. — URL: http://bgscience.ru/com/lib/2349 Read more ›