Montane-Marsal, Naivi, and Armando Cuesta-Santos. “Intangible Assets and Their Influence on the Economic Efficiency of a Cuban Bank”. Industrial Engineering (Ingeniería Industrial), vol. 41, no. 3, Aug. 2020, pp. 1-12, https://rii.cujae.edu.cu/index.php/revistaind/article/view/1064.