Silupu Garcés, Brenda Liz, and Sergio David Reyes Landa. 2019. “Analysis of Determinants and Costs of Informality in Small Businesses: An Empirical Study for Peru”. Journal of Quantitative Methods for Economics and Business Administration 27 (July):156-65. https://doi.org/10.46661/revmetodoscuanteconempresa.2915.