(3GdeYLe GdeaUd aj Yde GdYQhV hGdbGajI hafhf GdTYQ (B/s - (3jYbhH , Gejd HOjY ;s ((3HjQhJ,dHfGf(B:s (3OGQ GdcJH GdYdej,s, 1991)
Keywords: (3GdYQhV hGdbhGaj (B.s