6Hepbasli A,Ozgener L.Development of geothermal energy utilization in Turkey:a review[J].Renewable and Sustainable Energy Reviews,2004,8.
7Kepinska B.Current geothermal activities and prospects in Poland--an overview[J].Geothermics 32,2003,7.
8Lund JW,Freeston DH.World-wide direct uses of geothermal energy 2000[C].Proceedings of the World Geothermal Congress 2000,Japan,28 May - 10 June,2000.
9Huang S.Looking back and ahead for geothermal energy development in China[C].Proceedings of the World Geothermal Congress,Japan,28 May - 10 June,2000.
10Zhang KY.Newest statistics of geothermal development in China[C].Proceedings of the 6th Asian Geothermal Symposium,26 - 29,Oct.2004.
