(3bUGFO dGLd GdedGc GdVGFY (B/ s - (3NGdO GdfLGQs ([S.N] : (3QjGV GdQjS ddcJH hGdfTQ , s, 1990)
Keywords: (3GdTYQ GdYQHis; (3OhGhjf hbUGFOs; (3JGQjN hfbOs