(3Mbhb GdGaQGO GRGA GdeQGab GdYGeI hGdeTQhYGJ GdYGeI (B/ s - (3egfG, eMeO aDGO, s ((3GdGScfOQjI (B[(3eUQ(B] : s (3eYgO GdHMhK hGdOQGSGJ GdYQHjI, bSe GdHMhK hGdOQGSGJ GdbGfhfjI hGdTQYjI, (B390 (3g`(B. = 1970.s, 1970)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B439-445.s
Keywords: (3GdeQGab GdYGeIs -- (3bhGfjf hJTQjYGJs -- (3eUQ(B.s; (3GdedcjI GdYGeIs -- (3bhGfjf hJTQjYGJs -- (3eUQ(B.s; (3Mbhb GdGfSGfs -- (3bhGfjf hJTQjYGJs -- (3eUQ(B.s