1. Practical nonparametric statistics;CONOVER W.J.,1980
2. Plasma magnesium and other electrolyte abnormalities in horses affected with gastrointestinal tract disease;COSTA L.R.R.;INTERNATIONAL EQUINE COLIC RESEARCH SYMPOSIUM,2002
3. Tratado de fisiologia veterinária;CUNNINGHAM J.G.,1993
4. Large colon impaction: 147 cases (1985-1991);DABAREINER R.M.;J Am. Vet. Assoc.,1995
5. Ionized calcium concentration in horses with surgically managed gastrointestinal disease: 147 cases (1988-1990);DART A.J.;J Am. Vet. Assoc.,1992