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

??????, ??????. 2003. ????, ??? ? ????????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 28. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 132?134.