Amin Ravan, A. “Investigating the Impact of E-Customer Relationship Management (eCRM) and Digital Innovation on the Strategic Competitive Performance of Small and Medium-Sized Enterprises in Guilan Province”. International Journal of Business Management and Entrepreneurship, vol. 2, no. 2, Dec. 2022, pp. 61-72, https://mbajournal.ir/index.php/IJBME/article/view/30.