?????????, ??????, ??? . 2013. ????????? ???????? ?? ??????? ?????????? ? ????? ???????? ? ??????????. ???????? ?? ????????? ??????????? ???. ??????? ?????????. ???????? ?? ????????? ????????? / Annual of Sofia University "St. Kliment Ohridski".Faculty of Slavic Studies 98. (???????? ?? ????????? ??????????? ???. ??????? ?????????. ???????? ?? ????????? ????????? / Annual Of Sofia University "st. Kliment Ohridski".faculty Of Slavic Studies).