@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}}
} 

@Book{Bool1966,
 author = {Boolootian, R. A.},
 year = {1966},
 title = {Physiology of Echinodermata},
 publisher = {Intersci Publ.},
 address = {New York}
} 

@Misc{ADW,
 howpublished = {\url{http://animaldiversity.org/accounts/Strongylocentrotus_purpuratus/}}
} 

@Article{LarsVada1980,
 author = {B. R. Larson and R. L. Vadas and M. Keser},
 year = {1980},
 title = {Feeding and Nutritional Ecology of the Sea Urchin \emph{Strongylocentrotus drobach&nsis} in {M}aine, {U}{S}{A}},
 journal = {Marine Biology},
 volume = {59},
 pages = {49--62}
} 

@Article{MeidSche1998,
 author = {S. K. Meidel and R. E. Scheibling},
 year = {1998},
 title = {Annual reproductive cycle of the green sea urchin, \emph{Strongylocentrotus droebachiensis},
 in differing habitats in {N}ova {S}cotia, {C}anada},
 journal = {Marine Biology},
 volume = {131},
 pages = {461--478}
} 

@Misc{echinobase,
 howpublished = {\url{http://www.echinobase.org/Echinobase/SpAbout}}
}