Yorucu, Vedat, and Dervis Kirikkaleli. “Empirical Modeling of Education Expenditures for Balkans: Evidence from Panel FMOLS and DOLS Estimations”. Revista de Cercetare Si Interventie Sociala, vol. 56, Mar. 2017, pp. 88-101, https://www.rcis.ro/journal/article/view/2343-empirical-modeling-of-education-expenditures-for-balkans.