(2) Vanessa Piao and Patrick Boehler, 在中国，好空气是人权还是商品？ 纽约时报中文网, Dec 16, 2015 cn.nytimes.com/china/20151216/c16chinaair/
("此事在社交媒体上引发的论战分成两派，一派人认为干净空气属于基本人权，而非商品，另一派则反驳，既然餐厅花了加装空气净化器的本钱，自然有权为这个服务项目收费")
, which is translated from
Vanessa Piao and Patrick Boehler, In China, Charging Diners for a Side of Clean Air. New York Times, Dec 16, 2015.
Note: In table of contents at page A2, the heading for this report is: Clean-Air Fee Roils China.