(3Yde GdejQGK (B: s (3GSQGQg h GdZGRg (B: (3CeKdI eMdhdI (B: (3JYQjaGJ eHSWI (B/ s - (3YGThQ, eUWais ((3GdbGgQI (B:s (3ecJHI GdbQBf,s, 1988)
Keywords: (3GdejQGKs