Measuring reciprocity in high functioning children and adolescents with autism spectrum disorders
Journal of Autism and Developmental Disorders (2012) - Comment
pubmed: 21769705  doi: 10.1007/s10803-011-1331-9  issn: 1573-3432  issn: 0162-3257 

Tineke Backer Van Ommeren, Sander Begeer, Anke M. Scheeren, Hans M. Koot