Богданова, М. А., С. С. Ваничева, В. В. Сигидов, А. М. Уздин, and В. П. Чернов. “To the Question of Using the Indicator of Investment Effectiveness As the Criteria of Their Optimumity”. Modern Economics: Problems and Solutions, Vol. 3, Aug. 2017, pp. 8-17, doi:10.17308/meps.2017.3/1626.