Bejarano, Hernán, Pedro Hancevic, and Héctor M. Núñez. “Economic Impact of Covid-19 on Small and Medium Businesses under Voluntary and Imposed Restrictions”. EconoQuantum 18, no. 2 (June 25, 2021): 23–56. Accessed April 2, 2025. https://econoquantum.cucea.udg.mx/index.php/EQ/article/view/7229.