????????, ???????. 2013. ??????? ? ??????? (????????? ??????? ?? 20-?? ?????? ?? ?? ?. ????? ???????????? ?? ?????? ??????????, ???? ????????????, ?????? ??????, ??????? ????????? ? ??.). ???????? ?? ????????? ??????????? ???. ??????? ?????????. ???????? ?? ????????? ????????? / Annual of Sofia University "St. Kliment Ohridski". Faculty of Slavic Studies 98. (???????? ?? ????????? ??????????? ???. ??????? ?????????. ???????? ?? ????????? ????????? / Annual Of Sofia University "st. Kliment Ohridski". Faculty Of Slavic Studies).