(3GdUahI hGdeLJeY (B: s (3OQGSI aj Yde GdGLJeGY GdSjGSj (B/ s ((3GdbGgQI (B: s (3OGQ GdeYGQa , s, 1978)
Keywords: (3GdUahI, GdeLJeY, Yde GdGLJeGY GdSjGSj, GdJQGJH GdGLJeGYjs