(3eHOC MQjI GdbGVj GdLfGFj aj GdGbJfGY (B:s (3OQGSI JMdjdjI JCUjdjI ebGQfI (B/s - (3ESeGYjd, eMeO YHO GdTGajs ((3GdbGgQI (B:s (3OGQ GdefGQ,s, 1992)
(3HHdjhLQGajI (B: (3U(B. 185-197.s
Keywords: (3GdbGfhf GdLfGFjs -- (3eUQs