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

@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{Clar1970,
 author = {M. R. Clarke},
 year = {1970},
 title = {GROWTH AND DEVELOPMENT OF \emph{Spirula spirula}},
 journal = {J. mar. biol. Ass. U.K.},
 volume = {50},
 pages = {53-64}
} 

@article{Luke2016,
 doi = {10.1007/s13358-015-0088-8},
 author = {Alexander Lukeneder},
 year = {2016},
 title = {New size data on the enigmatic \emph{Spirula spirula} ({D}ecabrachia, suborder {S}pirulina), on a global geographic scale},
 journal = {Swiss J Palaeontol},
 volume = {135},
 pages = {87-99}
} 

@Misc{sealifebase,
 howpublished = {\url{https://www.sealifebase.ca/summary/Spirula-spirula.html}}
} 

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