(3cGQKI GdGOeGf (B/ s - (3GHQGgje fGaY YhV Gddgs ((3GdbGgQI (B: s (3eQcR GdGgQGe ddJQLeI hGdfTQ , s, 1989)
Keywords: (3GdGSQIs; (3GdeNOQGJ hGdTHGHs; (3ecGaMI GdeNOQGJs; (3GdGHGA hGdGHfGAs; (3GdGOeGf hGdTHGHs; (3GdGLJeGY GdYdGLis; (3GdGOeGfs