http://www.researchgate.net/publication/242315831_The_acquisition_of_morpho-syntax_in_Spanish_Implications_for_current_theories_of_development_%28PhD_Thesis%29 (Publisher version)
Aguado-Orea, J. J. (2004). The acquisition of morpho-syntax in Spanish: implications for current theories of development. PhD Thesis, Univ., Nottingham.