1. Anon. 1987.Ravikilpailusäännöt ‘Rules for harness races’, 72Helsinki: Suomen Hippos.
2. EAAP Publication no. 42;Arnason T.,1989
3. Arnason, T. and Svendsen, M. 1991. Application of animal model of trotters in Scandinavia. Proc. 42nd Ann. Meet. Eur. Assoc. Anim. Prod. 1991. pp.13
4. Bendroth, M. 1981. A survey of reasons for some trotters being non-starters as 2- 3- and 4-year olds. Proc. 36th Ann. Meet. of Eur. Assoc. for Anim. Prod. 1981. pp.5
5. Klemetsdal, G., Svendsen, M. and Vangen, O. Preliminary results from genetic studies of racing performance in Norwegian trotters. Proc. 36th Ann. Meet. of Eur. Assoc. for Anim. Prod. pp.10