@Misc{Wiki,
 howpublished = {\url{http://en.wikipedia.org/wiki/Hexaprotodon_liberiensis}}
} 

@Book{Kooy2010,
 author = {Kooijman, S.A.L.M.},
 year = {2010},
 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
 pages = {Table 4.2 (page 150), 8.1 (page 300)},
 howpublished = {\url{../../../bib/Kooy2010.html}}
} 

@Article{LangSchm1982,
 author = {D. Langdon and K. Schmidt},
 year = {1982},
 doi = {10.1111/j.1748-1090.1982.tb02048.x},
 title = {Hand-rearing a pygmy hippopotamus \emph{Choeropsis liberiensis} at {M}elbourne {Z}oo},
 journal = {Int. Zoo Yb.},
 volume = {22},
 pages = {268--269}
} 

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