Đukić, Đorđe, and M. Đukić. “Interdependencies of Markets in Southeastern Europe and Buyback of Shares on Shallow Capital Markets: The Application of Cointegration and Causality Tests”. Panoeconomicus, vol. 62, no. 4, Oct. 2015, pp. 469-91, doi:10.2298/PAN1504469D.