G. Cherniyavskyi, Volodymyr, et al. “Integration of Flexibility Concepts in the Management, Accounting and Financial Accounting System: Effectiveness of the Agile Methodology”. Revista San Gregorio, vol. 1, no. 42, Dec. 2020, https://revista.sangregorio.edu.ec/index.php/REVISTASANGREGORIO/article/view/1557.