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