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

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

@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{Hauk2007,
 author = {E. Hauksson},
 year = {2007},
 title = {Growth and reproduction in the {I}celandic grey seal},
 journal = {NAMMCO Scientific Publications},
 doi = {10.7557/3.2730},
 issn = {2309-2491},
 url = {https://www.ub.uit.no/baser/septentrio/index.php/NAMMCOSP/article/view/2730},
 pages = {153--162}
}