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

@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{Hugh1977,
 author = {Hughes, F.},
 doi = {10.1111/j.1748-1090.1977.tb00918.x},
 year = {1977},
 title = {Hand-rearing a {S}umatran tiger \emph{Panthera tigris sumatrae} at {W}hipsnade {P}ark},
 journal = {International Zoo Yearbook},
 volume = {17},
 pages = {219-221}
} 

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