1.题目：Income inequality and income mobility
作者：Shorrocks
期刊：Journal of economic theory，vol(19) 1978
相关链接：http://www.sciencedirect.com/science/article/B6WJ3-4CYGCXB-11H/2/db5bc2c5a36b6a45bfa0b3e115b5b937

2.题目：The measurement of mobility
  作者：Shorrocks
  期刊：Econometrica, Vol. 46, No. 5 (Sep., 1978), pp. 1013-1024