(3bGfhf GdJYGhf GdGScGfj (B/s - (3TeS GdOjf NaGLj(B.s; (3CMeO TeS GdOjf NaGLj(B.s ((3GdbGgQI (B:s (3OGQ HQL GdJYGhf ddWHGYI hGdfTQ hGdJQLeI,s, 1991)
Keywords: (3GdEjLGQGJ s -- (3bhGfjf hJTQjYGJs -- (3eUQ s; (3GdEScGf s -- (3bhGfjf hJTQjYGJs -- (3eUQs