S. Calkins

Does imitation facilitate the acquisition of grammar? Evidence from a study of autistic, Down's syndrome and normal children

S. Calkins, H. Tager-Flusberg, H Tager-Flusberg, 1990, Journal of Child Language.

A longitudinal study of language acquisition in autistic and down syndrome children

Ann Chadwick-Dias, Helen Tager-Flusberg, H. Tager-Flusberg, 1990, Journal of autism and developmental disorders.