(3GdJTQjYGJ GdeGdjI hGdJLGQjI (B/ s - (3edhcj, GjGO YHO GdLHGQ, s (3eDda(B.(3, s; (3GdMGQS, MceJ YHO GdcQje, s; (3GdUGaj, YHO GdQDha, s ([(3HZOGO, GdYQGb(B] : s (3OGQ GdJbfj ddWHGYI hGdfTQ (B985.s, 1985)
(3jJVef EQLGYGJ HHdjhLQGajI (B: (3UaMI (B367-370.s
Keywords: (3GdbGfhf GdJLGQjs -- (3GdYQGb(B.s; (3GdeGdjI GdYGeIs -- (3bhGfjf hJTQjYGJs -- (3GdYQGb(B.s