(3XdGd GdeSJbHd (B: s (3g` (B. (3L (B. (3hdPh GdbUU GdYdei hGdfHhAI (B/ s - (3HcQ YHGS (B((3JQLeI(B)s; (3HGQfOQ, HGfQcs ((3GdbGgQI (B: s (3GdeLdS GdGYdi ddKbGaI , s, 1997)
Keywords: (3GdGOHs; (3GdbUU GdGfLdjRjIs; (3GdbUU GdYdejI GdGfLdjRjIs