Pittiglio, Rosanna, Sergio Bruni, and Filippo Reganati. “Heterogeneity in Firm Performance During Economic Crisis”. Business, Management and Economics Engineering 12, no. 1 (June 30, 2014): 1-14. Accessed May 4, 2024. https://journals.vilniustech.lt/index.php/BMEE/article/view/3481.