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

@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{CastZarz2000,
 author = {Castro-Arellano, I. and H. Zarza and R. Medellin},
 year = {2000},
 title  = {Philander opossum},
 journal = {Mammalian Species},
 volume = {638},
 pages = {1-8}
} 

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