1. Animal Improvement Programs Laboratory. 2003. DHI participation (DHI Report K-1). Available: http://aipl.arsusda.gov/publish/ dhi/part.html. Accessed Dec. 24, 2003.
2. DHI Computing Service, Inc. 2003. Why DHI Provo? Available: http://www.dhiprovo.com/whydhi.asp. Accessed Dec. 24, 2003.
3. International Bull Evaluation Service. 2001. INTERBULL routine genetic evaluation for dairy production traits, November 2000. Available: http://www-interbull.slu.se/eval/nov00.html. Accessed Dec. 29, 2003.
4. International Committee for Animal Recording. 2002. Yearly inquiry on the situation of milk recording in member countries. Available: http://www.icar.org/docs/Yearly%20inquiry/1998- 2000/2000%2002.pdf. Accessed June 21, 2004.
5. Dairy Herd Improvement Associations;Voelker;J. Dairy Sci.,1981