СЕМКО, І. Б.; КОПИЛ, Д. В. Risk-free planning method of the portfolio projects. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 1, n. 12(55), p. 52–54, 2012. DOI: 10.15587/1729-4061.2012.3628. Disponível em: https://journals.uran.ua/eejet/article/view/3628. Acesso em: 7 may. 2024.