Detailed Notes on ???? ??????? ???????? ???? ????? ??????? ????? ??? ?????? ?????? ?? ????? ?????? ???? ??????. ?????? ??? ?????????? ?????? ???????? ???? ?????? ??? ?? ???????.???? ????? ??? ???? ????????? ??????????? ???? ??????? ???????? ?????????? ??????? ??????? ???? ????? ????? ??????????? ???? ???? ??? ????? ??? ??????? ????? ?????? ??? ????