Studies that specifically used the EAGALA model:

Nurenberg, J.R., Schleifer, S.J., Shaffer, T., Yellin, M., Desai, P.J., Amin, R, Bouchard, A., & Montalvo, C. (2015). Animal-assisted therapy with chronic psychiatric inpatients: Equine-assisted psychotherapy and aggressive behavior. Psychiatric Services, 66, 80-86.

Kemp, K., Signal, T., Botros, H., Taylor, N., Prentice, K. (2013). Equine Facilitated Therapy with children and adolescents who have been sexually abused: A program evaluation study. Journal of Child and Family Studies.