(3GdeaGJjM GdYTQI ddfLGM (B/ s - (3Gdabj, EHQGgjes ((3ehfJQjGd (B:s (3GdeQcR GdcfOj ddHQeLI GddZhjI GdYUHjI,s, 1999)
Keywords: (3Yde GdfaSs; (3GdYdGbGJ GdEfSGfjIs; (3GdYdGbGJ Hjf GdCaQGOs; (3GdJMdjd GdfaSjs