Journal Title  - Portuguese Economic Journal
    Article Title  - Nonlinear models with panel data
    Volume  - Volume 1
    Issue  - 2
    First Page  - 163
    Last Page  - 179
    Issue Cover Date  - 2002-08-01
    Author  - BoE. Honoré
    DOI  - 10.1007/s10258-002-0007-y
    Link  - http://www.springerlink.com/content/5r0ee8km4c9979lp