Aidar  S. Puryaev, 
    The Mathematical Apparatus of Compromise of Efficiency Estimation of Investment Projects,
    International Business Management,
    Volume 9,Issue 5,
    2015,
    Pages 856-861,
    ISSN 1993-5250,
    ibm.2015.856.861,
    (https://makhillpublications.co/view-article.php?doi=ibm.2015.856.861)
    Abstract: The problem of compromise efficiency estimation of investment projects is presented. Application of the aggregation theory and the fuzzy sets theory in an efficiency estimation of investment projects is proved. The mathematical apparatus of compromise efficiency estimation of investment projects is developed.
    Keywords: Investment project;estimation;fuzzy sets;desirability function;efficiency