(3GdacQ GdJQHhj YfO GdTjYI GdGeGejI (B/ s - (3GdbRhjfj, YdGA GdOjf SjO GejQ eMeO, s; (3Ydj, SYjO GSeGYjd, s ((3GdchjJ (B: s (3ecJHI Gdabjg, (B407 (3g`(B. = 1986.s, 1986)
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3UaMI (B451-468.s
Keywords: (3GdGeGejI (B((3aQbI GSdGejI(B)s; (3GdJQHjI GdGSdGejI (B((3TjYI(B).s