?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=J.H.&rft.aulast=Grigorova&rft.au=Grigorova%2C+J.H.&rft.date=2014&rft.degree=Pre-master&rft.title=Dynamics+of+Cohort+Replacement+in+the+Transition+Economies+of+Central+and+Eastern+Europe