??????-??????? — ??? ???????? ?????? ?????????? ???????????? ????. ? ??? ????????? ?????? ?????? ?????? ??, ?????? ????? ??????? ?????? ??????????? ?????.
??????????? ??????? ???????? ????? ????? ???????????? ? ????????? ???, ????????? ? ???? ????? ????? ?????? ?????? ????? ?????????? ?
??, ???? ???????? ???????? ???????????? ????????? ?????? ??? ?? ??????? ??????? ????? ????????? ??????.
?? ?????? ?????? ????? ???? ????????? ???? ??????????, ?? ?? ??????? ??????? ?????????? ?????.
??? ?????? ?????? ??? ?????????? ????????? ????????????? ?? ?????? ?????????? ?????????? ?????
??????????? ? ???? ?????? ????????? ?????-???? ????????? ??????, ??, ?? ????????, ??? ????? ??? ??? ???????? ????????? ? ???? ????? ?????????? ? ???? ????. ?? ????????? ??????????? ??????? ? ??????????? ????????? ?????? ?????? ? ?????????? ??????????? ?? ?????.
This is another area where research