http://www.unige.ch/cyberdocuments/theses2003/RasettiL/these.pdf (Verlagsversion)
french_rasetti2003_s.pdf (beliebiger Volltext), 4MB
Rasetti, L. (2003). Optional categories in early French syntax: a developmental study of root infinitives and null arguments. PhD Thesis, Univ., Genf.