A. Barber

Repetitive and stereotyped movements in children with autism spectrum disorders late in the second year of life.

Lindee Morgan, A. Wetherby, Lindee Morgan, 2008, Journal of child psychology and psychiatry, and allied disciplines.

Repetitive and Stereotyped Behaviors in Children with Autism Spectrum Disorders in the Second Year of Life

Lindee Morgan, A. Wetherby, N. Watt, 2008, Journal of autism and developmental disorders.