(3MjGI aQGfSjS eGch eHjQGdbUjQI GdSYjOI s - (3gefZhGj(B. (3GQfSJs; (3fUGQ(B. (3SejQ YRJ (B- (3eJQLes ((3OGQ GdTQhb ddfTQs (3YeGfs, 1987)
Keywords: (3bUUs; (3bUU YGdejI eJQLeIs