(3GdGQgGH hGdbGfhf GdOhdj (B/ s - (3GdZRGd, GSeGYjd, s ((3GdbGgQI (B[(3eUQ(B] : s (3GdcJGH ddfTQ hGdJhRjY ; s (3HjQhJ, dHfGf (B: s (3eLO GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY, (B410 (3g`(B. = 1990.s, 1990)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B111-119.s
Keywords: (3GdGQgGHs -- (3bhGfjf hJTQjYGJ(B.s; (3GdGQgGH (B((3bGfhf Ohdj(B)s