(3GdGYdGe GdOhdj hGdYQHj (B/ s - (3GdHjGJj, jGS NVjQ, s ((3HZOGO (B[(3GdYQGb(B] : s (3hRGQI GdJYdje GdYGdj hGdHMK GdYdej, LGeYI HZOGO (B993.s, 1993)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B487-523.s
Keywords: (3GdGYdGe GdOhdj(B.s; (3hSGFd GdGYdGes -- (3GdHdGO GdYQHjI(B.s; (3GdGYdGes -- (3GdHdGO GdYQHjI(B.s