V. C. Gathercole

Chapter 10: Monolingual and Bilingual Acquisition: Learning Different Treatments of that-trace Phenomena in English and Spanish

Virgina C. Mueller Gathercole, V. C. Gathercole, 2002 .

Independent retrieval of number and grammatical gender in spoken language production

J. R. Roberts, M. Tainturier, Eurig W Jones, 2007, Brain and Language.