(3afhf RNQajI eYeGQjI (B: s (3YHQ eQGMd GdJGQjN (B/ s - (3eMji GdOjf WGdhs ((3ShQjG (B: s (3OGQ OeTb ddfTQ hGdJhRjY hGdWHGYI , s, 1999)
Keywords: (3Gdaf GdRNQais; (3GdRNQaI HGdNTHs; (3GdRNQaI GdeYeGQjIs; (3GdRNQaI GdeYeGQjI (B- (3JGQjNs; (3GdRNQaI GdeYeGQjI GdjhfGfjIs