文献1

【题 名】： Rough approximations of vague sets in fuzzy approximation space
【作 者】：Yonghong Shena, , and Faxing Wangb

【期刊、会议、单位名称】：International Journal of Approximate Reasoning

【年, 卷(期), 起止页码】：Volume 52, Issue 2, February 2011, Pages 281-296
【全文链接】：http://www.sciencedirect.com/science?_ob=ArticleURL&;_udi=B6V07-50V20BX-2&_user=10065664&_coverDate=02%2F28%2F2011&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10065664&md5=27b572628c639b887925197de1f3dc5c&searchtype=a

文献2

【题 名】： A new integrated design concept evaluation approach based on vague sets
【作 者】：Xiuli Genga, Xuening Chu, a, and Zaifang Zhanga


【期刊、会议、单位名称】：Expert Systems with Applications

【年, 卷(期), 起止页码】：Volume 37, Issue 9, September 2010, Pages 6629-6638
【全文链接】：http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V03-4YP8TKC-K&_user=10065664&_coverDate=09%2F30%2F2010&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10065664&md5=5913b708ed9ddb6153187c3e0a3c7a9c&searchtype=a