求助英文文献，谢谢

1.【作者(必填)】Jiye Lianga, , Author Vitae, Xingwang Zhaoa, Author Vitae,

【文题(必填)】Determining the number of clusters using information entropy for mixed data

【年份(必填)】2012

【全文链接或数据库名称(选填)】http://www.sciencedirect.com/science/article/pii/S0031320311005188

2.【作者(必填)】Bingjun Liua, Xiaohong Chenb, Yanqing Lianc, , , Lili Wua

【文题(必填)】Entropy-based assessment and zoning of rainfall distribution

【年份(必填)】2013

【全文链接或数据库名称(选填)】http://www.sciencedirect.com/science/article/pii/S0022169413002205

3.【作者(必填)】Lei Zhanga, , , ,Qixin Caoa, Jay Leeb

【文题(必填)】A novel ant-based clustering algorithm using Renyi entropy

【年份(必填)】2013

【全文链接或数据库名称(选填)】http://www.sciencedirect.com/science/article/pii/S1568494612005066

4.【作者(必填)】Chonghui Guo, , Fang Li

【文题(必填)】An improved algorithm for support vector clustering based on maximum entropy principle and kernel matrix

【年份(必填)】2011

【全文链接或数据库名称(选填)】http://www.sciencedirect.com/science/article/pii/S0957417410015186

看下对治不对