??? ????? ?????? ?????? ?????? ???? ???? ????? ???? 21 ?????? ??????. ???? ????? ?? ?????????? ??????? ???????? ???? stabilitty ???????? ?? ?????. ????? ?????? ?? ??? ???? ????? ???? 21 ????? ?????? ??? ???????? ???????? . ??? ????? ?? ??? ????? ????? ???? ????? ?? ???? ????????? ?? ??????? ?????? ????? ?? ???? ????? ???????. ??? ???, ????… Read More