(3CTLGQ GdaGcgI aj HdGO GdYQH (B: s (3RQGYJgG CUfGagG (B- (3NOeJgG h ahGFOgG (B/ s - (3MSf, Wg GdTjNs ((3OeTb (B:s (3OGQ YdGA GdOjf ddfTQ,s, 1998)
Keywords: (3GdahGcIs; (3GdRQGYIs