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

@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{BluhPiep1998,
 author = {Bodil A. Bluhm and Dieter Piepenburg and Karen von Juterzenka},
 year = {1998},
 title = {Distribution, standing stock, growth, mortality and production of \emph{Strongylocentrotus pallidus} ({E}chinodermata: {E}chinoidea) in the northern {B}arents {S}ea},
 journal = {Polar Biol},
 volume = {20},
 pages = {325-334}
} 

@Article{FalkLonn1983,
 doi = {10.1080/00364827.1983.10420567},
 author = {Inger-Britt Falk-Petersen and Sunniva L{\o}nning},
 year = {1983},
 title = {Reproductive cycles of two closely related sea urchin species, \emph{Strongylocentrotus droebachiensis} ({O}.{F}. {M}\"{u}ller) and \emph{Strongylocentrotus pallidus} ({G}.{O}. {S}ars)},
 journal = {Sarsia},
 volume = {68(2)},
 pages = {157-164}
}