I. Membrino

A comparison of the age-MLU relation in normal and specifically language-impaired preschool children.

T. Klee, M. Schaffer, K. Mougey, 1989, The Journal of speech and hearing disorders.

Differentiating specific language impairment from normal language development using grammatical analysis

W. Gavin, T. Klee, I. Membrino, 1993 .