1. History of 1000 years of Greek Vase Painting;Arias,1962
2. A New Method of Horsemanship; Including the Breaking and Training of Horses: With Instructions for Obtaining a Good Seat;Baucher,1852
3. Cortisol release, heart rate and heart rate variability, and superficial body temperature, in horses lunged either with hyperflexion of the neck or with an extended head and neck position;Becker-Birck;Journal of Animal Physiology and Animal Nutrition (Berlin),2012
4. de la Guerinière, F.R., 1733. Ecole de Cavalerie. Imprimerie Jacques Collombat, Paris, France. Reprint 2001. Editions Charles Lavauzelle, Panazol, France.
5. The effect of head and neck position on the thoracolumbar kinematics in the unridden horse;Gómez Álvarez;Equine Veterinary Journal,2006