(3GdJahjV aj GdENJUGU (B: s (3OQGSI ebGQfI (B/ s - (3YHO GdgGOj, HTGQs ((3YeGf (B:s (3OGQ GdaQbGf,s, 1982)
Keywords: (3GdbGfhf GdEOGQjs; (3GdbGfhf GdOSJhQjs