Anna Haug, Susanne Eich-Greatorex, Aksel Bernhoft, Harald Hetland and Trine Sogn
Acta Agriculturae Scandinavica, Section A - Animal Sciences 58 ( 2 ): 65 - 70 , 2008
Anna Haug, Rune Rodbotten, Liv Torunn Mydland and Olav Albert Christophersen
Acta Agriculturae Scandinavica, Section A - Animal Sciences 58 ( 2 ): 71 - 77 , 2008