(3cJGH GdGdaGX GdeNJdaI ai GdeYGfi GdeDJdaI (B: s (3dGHf eGdc GdWGFi GdLjGfi (B/ s - (3GHf eGdc (B: (3LeGd GdOjf GHh YHOGddg eMeO Hf YHOGddg Hf eGdc GdWGFi GdLjGfi GdTGaYis ((3GdQjGV (B: s (3eYgO GdHMhK GdYdejI hGMjGA GdJQGK GdGSdGei , s, 1991)
Keywords: (3GdHdGZI GdYQHjIs; (3GddZI GdYQHjI (B- (3GdGdaGXs; (3GddZI GdYQHjI (B- (3GdGTJbGbs; (3GdHdGZI GdYQHjI (B- (3GdeYGfis