(3WQb JYdje GdCWaGd GdbQGAI h GdcJGHI (B/ s - (3GdMSf, gTGes ((3YeGf (B:s (3ecJHI OGQ GdKbGaI ddfTQ hGdJhRjY,s, 1990)
Keywords: (3GdbQGAIs; (3GdOQGSGJs; (3GdJOQjSs; (3GdJYdje GdEHJOGFjs