(3JChjd eNJda GdMOjK (B/s - (3GHf bJjHI, YHO Gddg Hf eSde,s 213-276 (3g`(B.s; (3GdfLGQ, eMeO RgQjs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1972)
Keywords: (3GdMOjKs -- (3JChjds; (3GdMOjKs -- (3GdeDJda hGdeNJdas