白皮书：已有190个城市实时发布PM2.5监测数据 (Latest human rights whitepaper indicates 190 cities publish real-time reading of PM2.5)
Beijing News, May 26, 2014
www.bjnews.com.cn/news/2014/05/26/318310.html
China to scrap millions of cars to improve air quality
中国称将加大减排力度淘汰百万辆黄标车
British Broadcasting Corporation, May 26, 2014
EN: http://www.bbc.com/news/business-27583404
CH: www.bbc.co.uk/zhongwen/simp/china/2014/05/140526_china_yellowtag_cars.shtml