计生政策后遗：中国劳动适龄人口三年连降 (China’s working-age population shrinks for three consecutive years as a result of “one child policy”)
South China Morning Post, January 21, 2015
http://www.nanzao.com/sc/china/46607/ji-sheng-zheng-ce-hou-yi-zhong-guo-lao-dong-gua-ling-ren-kou-san-nian-lian-jiang