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References
György C. Kálmán
(2016). Turning points in research: Systems and theory. Corela, 19 (HS), n/a. https://doi.org/10.4000/corela.4536.
(2016). Turning points in research: Systems and theory. Corela, 19 (HS), n/a. https://doi.org/10.4000/corela.4536.