(3GdeOf GdYQHjI GdcHQi ai GdYUQ GdYKeGfi (B/ s - (3Qjehf, GfOQjIs; (3dWja aQL (B((3eJQLe(B)s ((3GdbGgQI (B: s (3OGQ GdacQ ddOQGSGJ hGdfTQ hGdJhRjY , s, 1991)
Keywords: (3eUQs; (3GdGMhGd GdGbJUGOjIs; (3GdJNWjWs; (3GdeOfs; (3GdYGde GdYQHi (B- (3JGQjN (B- (3GdYUQ GdYKeGfis