Cite this article:

Shen Yulan . . New Technology of Library and Information Service, 2006, 1(10): 91-93.

URL:

https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/10.11925/infotech.1003-3513.2006.10.21     OR     https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/Y2006/V1/I10/91