Sánchez, J., Esparza, F., Gaibor, I. and Barba, M. 2020. La evasión tributaria originada en el uso de comprobantes de venta/Evaluation of micro and small enterprises of the popular and solidarity economy prior to participating in a Business Round. KnE Engineering. 5, 2 (Jan. 2020), 149–163. DOI:https://doi.org/10.18502/keg.v5i2.6231.