J. J. Soria-Moreta, A. M. Toapanta-Caiza, C. N. Tenelanda-Avila, and S. F. Fiallos-Bonilla, “The effect of VAT regressivity on the popular and solidarity economy and social equity”, RUGC, vol. 3, no. S1, pp. 75–82, Mar. 2025, Accessed: Oct. 31, 2026. Available: https://revistacientifica.ugc.mx/index.php/rugc/article/view/101