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