???? ???? ???? ???? ???? ?? ???????? ?????, ????? ???? STRATEGIES ????? ???? ??? ???. ??? ?? ???? ???? ????? ????? ????? ?????: ???? ???? ?????? ???? ???? ?? ????. ??????, ????? ?? ????? ??? ???? SERP ? ????? ?????? ????? ?? ???? ??? ???. ?? ????/?? ????????? ??? ???? ???? ????? ????? ????? ?????? ??????? ??? ?????? ???? ???? ?? ???? ?