1. Pezzoli G, Del Bue M: Valutazione radiografica del grado di sviluppo scheletrico nel cavallo trottatore in rapporto all'attivita' atletica. (Evaluation of bone development in trotting horses and athletic activity). Folia Vet Lat. 1975, 5: 399-411.
2. Gabel AA, Spencer CP, Pipers FS: A study of correlation of closure of the distal radial physis with performance and injury in the Standardbred. J Am Vet Med Assoc. 1977, 170: 188-194.
3. Yoshida K, Ueda Y, Masumitsu H: Radiological studies on the ossification of the Thoroughbreds 2. Closure process in the distal epiphyseal lines of the radius and the 3rd metacarpal bone and the proximal epiphyseal line of the proximal phalanx and an assessment system of bone maturity. Bull Equine Res Inst. 1982, 19: 18-29.
4. Aðalssteinsson S: Origin and conservation of farm animal populations in Iceland. Z Tierzuecht Zuechtsbiol. 1981, 98: 258-264.
5. Pálsson PA: Er íslenski hesturinn hreinræktaður í 1000 ár? (Is the Icelandic horse pure bred for a thousand years?). Eiðfaxi. 1996, 2: 18-19.