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} 

@Book{Kooy2010,
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 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
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} 

@Article{BeltButt1992,
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} 

@Article{CaloMcDo1973,
 author = {L. L. Calo and R . E. McDowell and L. D. VanVleck and P. D. Miller},
 year = {1973},
 title = {Parameters of growth of {H}olstein-{F}riesian bulls},
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 volume = {37(2)},
 pages = {417-421}
} 

@Article{HeinLosi1998,
 author = {A. J. Heinrichs and W. C. Losinger},
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 title = {Growth of {H}olstein Dairy Heifers in the {U}nited {S}tates},
 journal = {J Anim. Sci.},
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 pages = {1254-1260}
} 

@Misc{AnAge,
 howpublished = {\url{http://genomics.senescence.info/species/entry.php?species=Bos_taurus}}
}