(3GdChdjGA GdKdGKI (B: s (3QGHYI GdYOhjI , eGdc Hf OjfGQ , Ph Gdfhf GdeUQj (B/ s - (3YRGe, UdGMs ([(3ZjQ eYQa(B] : s (3eDSSI OGQ GdTYH, s, 2002)
Keywords: (3GdESdGe(B. s; (3GdTQjYI GdESdGejI(B. s; (3GdabgGA(B. s