(3CMcGe GdJCejf aj GdbGfhf hGdbVGA (B:s (3OQGSI ebGQfI (B/s - (3TQa GdOjf, CMeOs ((3GdchjJ (B:s (3LGeYI GdchjJ,s, 1983)
(3HHdjhLQGajI (B: (3U(B. 587-594.s
Keywords: (3GdJCejfs -- (3bhGfjf hJTQjYGJs; (3GdJCejf GdGLJeGYjs -- (3bhGfjf hJTQjYGJs; (3GdESdGe hGdJCejfs; (3GdJTQjYGJ GdGLJeGYjIs