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

@Misc{AnAge,
 howpublished = {\url{http://genomics.senescence.info/species/Phoca_vitulina}}
} 

@Misc{KovaLyde,
 howpublished = {\url{http://www.npolar.no/en/species/harbour-seal.html}}
} 

@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{KovaLavi1986,
 author = {Kovacs, K. M. and Lavigne, D. M.},
 year = {1986},
 title = {Maternal investment and neonatal growth in phocid seals},
 journal = {Journal of Animal Ecology},
 volume = {55},
 pages = {1035-1051}
} 

@Article{MarkBjor1989,
 author = {Markussen, N. H. and Bj{\o}rge, A. and {\O}Ritsland, N. A.},
 year = {1989},
 title = {Growth in harbour seals (\emph{Phoca vitulina}) on the {N}orwegian coast},
 journal = {Journal of Zoology},
 volume = {219},
 number = {3},
 doi = {10.1111/j.1469-7998.1989.tb02591.x},
 pages = {433-440}
}