8Onchaga R. Extending the Quality Concept in Geo- Information Processing[C]. Map Asia,Kuala Lum- pur, Malaysia, 2003.
9Wu Huayi, Zhu Haijun, I.iu Yi. A Raster-Based Map Information Measurement for QoS[C]. The 20th ISPRS Congress, Commission II, WG VI/6, Is- tanbul, Turkey, 2004.
10Shen Shengyu,Liu Wei,Wu Huayi,et al. A Multi- level Comprehensive Evaluation Method for Quality of WMS Based on Fuzzy Mathematics[C]. Geoin- formatics 2009, Fairfax, USA, 2009.
