Kyurova, V. ., and B. . Koyundzhiyska-Davidkova. “Students’ Social Initiatives As A Prerequisite for Sustainable Development of Social Entrepreneurship: A Case Study in Bulgaria ”. European Journal of Sustainable Development, vol. 12, no. 4, Oct. 2023, p. 426, doi:10.14207/ejsd.2023.v12n4p426.