1. Influence of sex and age differences on tenderness of beef;Adams;Journal of Animal Science,1963
2. Anonymous (1981). Classification scheme for beef carcass classes. Official Journal of the European Communities. Council Regulations No. 1208/81 and 2930/81.
3. Landbouw- en tuinbouwtelling op 15 mei 1985,1986
4. Landbouw- en tuinbouwtelling op 15 mei 2000,2001
5. Relationship between muscle hypertrophy and the composition of skeletal muscles;Boccard,1982