(3eLehYI JTQjYGJ GdbWGY GdRQGYj(B. s (3GdeLdO GdGhd, s (3GdbhGfjf ` bQGQGJ eLdS bjGOI GdKhQI ` GdbQGQGJ GdJaSjQjI ddbhGfjf ` YbhO JCSjS TQcGJ GdbWGY GdRQGYj(B.s - (3GdYQGb(B.s ((3HZOGO, GdYQGb (B: s (3GdeLdS GdRQGYj GdGYdi, GdOGFQI GdbGfhfjI (B977.s, 1977)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdGUdGM GdRQGYjs -- (3bhGfjf hJTQjYGJs -- (3GdYQGb(B.s; (3GdGQGVj GdRQGYjIs -- (3bhGfjf hJTQjYGJs -- (3GdYQGb(B.s; (3GdYbhO (B((3bGfhf eOfj(B)s -- (3GdYQGb(B.s