(3HSJGf GdcQR (B- (3eSQMjIs - (3JTjNha(B. (3GfWhfs; (3MLGRj(B. (3gjKe Ydj (B- (3eJQLes ((3OQGdfSQ ddfTQhGdJhRjYs (3YeGfs, 1989)
Keywords: (3eSQMjGJs; (3eSQMjGJ eJQLeIs