Brownstone, D. and Train, K. (1999) ?Forecasting new product penetration with flexible substitution patterns?, . Journal of Econometrics, 89 109-129
Cameron, A. C. and Trivedi P. K. (2005) Microeconometrics, Methods and Applications, Cambridge University Press.
Cameron, A. C. and Trivedi P. K. (2010) Microeconometrics using STATA, Revised Edition, 2nd Ed., Stata Press
Papke, L. E. e Wooldridge J. M. (2008) ?Panel data methods for fractional response variables with an application to test pass rates?. Journal of Econometrics, 145,121?133.
Wooldridge, J.M. (2010) Econometric Analysis of Cross Section and Panel Data, 2nd ed., MIT Press.