K. Mraz, G. Eisenberg, P. Diener, G. Amadio, M. H. Foreman, and J. R. Engsberg, “The Effects of Virtual Reality on the Upper Extremity Skills of Girls with Rett Syndrome: A Single Case Study”, J. Intellect. Disabl. Diagn. Treat., vol. 4, no. 3, pp. 152–159, Oct. 2016.