Ehri, L.C. (2014) Orthographic mapping in the acquisition of sight word reading, spelling memory, and vocabulary learning. Scientific Studies of Reading 18(1).
Piasta, S. B., Purpura, D. J., & Wagner, R. K. (2010). Fostering alphabet knowledge development: A comparison of two instructional approaches. Reading and Writing, 23, 607-626
The children in the video below were part of the treatment group described in: Massengill Shaw, D., & Sundberg, M.L. (2008). At-risk preschoolers become beginning readers with neurologically integrated alphabet instruction. Journal of Education Research, 2(1), 61-73.