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

@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}}
} 

@book{Reed2008,
 author = {Janice Reed-Smith},
 year = {2008},
 title = {North American river otter husbandry notebook, 3rd edition},
 publisher = {Columbus Zoo and Aquarium}
} 

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