(3GdZLQ hGdbQL aj GdYQGb (B: s (3OQGSI ebGQfI aj GdLZQGajI GdGLJeGYjI GdJWHjbjI (B/ s - (3GdMOjKj , Wg MeGOj s ((3GdehUd (B: s (3OGQ GdcJH GdYdejI ddWHGYI hGdfTQ , s, 1979)
Keywords: (3GdLZQGajI GdJWHjbjI s