(3YfgeG hGdGcdjd hGdGfJXGQ (B/ s - (3UdGM GdRjfs ([S.N] : (3eQcR GdOQGSGJ GdSjGSjI hGdGSJQGJjLjI (B- (3GdCgQGe , s, 1992)
Keywords: (3GdbUU GdbUjQIs; (3GdbUUs