BROVARETS, A. .; CHOVNYUK, Y. .; KRAVCHYUK, V. .; IVANOV, E. THE QUALITATIVE FRACTAL ANALYSIS OF LONG TERM TIME SERIES FOR AGRICULTURAL SOILS’ ELECTRICAL CONDUCTIVITY PARAMETERS: METHODS OF NONLINEAR DYNAMICS, THEORY OF CHAOS, PHASE TRAJECTORIES. APPLIED QUESTIONS OF MATHEMATICAL MODELLING, [S. l.], v. 4, n. 2.2, p. 45-54, 2021. DOI: 10.32782/KNTU2618-0340/2021.4.2.2.4. Disponível em: //ojs.kntu.net.ua/index.php/aqmm/article/view/184. Acesso em: 7 груд. 2021.