(3eYLe GdYdeGA GdYQH (B/ s - (3GdhQO (B: (3HGbQ Gejfs; (3YhGO (B: (3chQcjSs ((3HjQhJ (B: (3dHfGf (B: s (3YGde GdcJH (B: s, 1986)
(3eL(B1 . (3GdYdeGA GdbOeGA (B- (3eL(B2 . (3GdYdeGA GdeYGUQhfs
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdYdeGA GdYQHs -- (3JQGLes; (3GdYdhe YfO GdYQHs