Sadov S.L. Extended forecast of economic results: instrumental potential of the fuzzy sets theory. Economic and Social Changes: Facts, Trends, Forecast, 2012, no. 6 (24)
Institute of Socio-Economic and Energy Problems of the North Komi scientific centre of the Ural RAS department (26, Kommunisticheskaya Street, Syktyvkar, 167982, Russian Federation)
