Safiullin MR, Elshin LA, Nikiforova EG. Methodological Approaches to the Diagnosis and Forecast of the Long-Wave Fluctuations in the Economy. IJEFI [Internet]. 2016 Oct. 21 [cited 2024 May 3];6(4):1616-24. Available from: https://www.econjournals.com/index.php/ijefi/article/view/3028