Martínez Martínez A. Impact of COVID-19 in the production, employment and digitization of companies in Guanajuato: a first approach. NS [Internet]. 2021 Apr. 9 [cited 2024 May 4];13(e). Available from: https://novascientia.lasallebajio.edu.mx/ojs/index.php/Nova/article/view/2795