Evmenova, Anna S., Michael M. Behrmann, Margo A. Mastropieri, Pamela H. Baker, and Heidi J. Graff. 2011. “Effects of Video Adaptations on Comprehension of Students With Intellectual and Developmental Disabilities”. Journal of Special Education Technology 26 (2): 39-55. doi:10.1177/016264341102600203.