Multiply controlled verbal operants: An analysis and extension to the picture exchange communication system

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Katherine Nelson · Monographs of the Society for Research in Child Development · 1973 · 1.9K citations

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The Picture Exchange Communication System

Lori Frost · Focus on Autistic Behavior · 1994 · 896 citations

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Sean Laraway, Susan Snycerski, Jack Michael et al. · Journal of Applied Behavior Analysis · 2003 · 663 citations · Full text

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Matt Tincani · Focus on Autism and Other Developmental Disabilities · 2004 · 270 citations

Education, Educational Psychology, Special Education +14