Z. L. Yang and Y. K. Tse, "Modeling firm-size distribution using Box-Cox
heteroscedastic regression", Journal of Applied Econometrics, Vol. 21, 
2006, pp. 641-653.

The data source used in this paper was documented in the paper by
Machado and Mata, "Box-Cox quantile regression and the distribution of
firm sizes" Journal of Applied Econometrics, 2000, 253-274.
Instructions for retrieving the data can be found in the paper.

Y. K. Tse
yktse [AT] smu.edu.sg