Varga, K. ., G. Tóth, and Z. Nagy. “Impact of Social Innovation on Population Change in Borsod-Abaúj-Zemplén County”. Theory, Methodology, Practice – Review of Business and Management, vol. 17, no. Special Issue, Jan. 2021, pp. 41-48, doi:10.18096/TMP.2021.01.05.