??? ????????? ?????????? ???? ??? ??????? pglsa ????????? ?????????? ?? ???????????????? ??????? ??????? ??? ???????? ????? ??? 3D ?????? ??? pglsa ??????? ??? ???????? pglisa ????? : ?????????????????????? ???? ?????????? ????????????? pglisa ????? ?????????????????? ?????????? ????? ??????????????? ?????????? ??????? ??? ????