De França, Jose Antonio, Nathália Alves Carvalho, Pereira Clésia Camilo, and Eduardo Tadeu Vieira. “The Operational Sustainability of the Firm : The Operational Performance Versus Financial Solvency Binomial - OPFS ”. International Journal for Innovation Education and Research 9, no. 1 (January 1, 2021): 353–370. Accessed April 29, 2024. https://scholarsjournal.net/index.php/ijier/article/view/2909.