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

@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{GeorSlac1996,
 author = {Steven G. George and William T. Slack and Neil H. Douglas},
 year = {1996},
 title = {Demography, Habitat, Reproduction, and Sexual Dimorphism of the Crystal Darter, \emph{Crystallaria asprella} ({J}ordan), from South-Central {A}rkansas},
 journal = {Copeia},
 volume = {1996(2)},
 pages = {68-78}
} 

@Misc{fishbase,
 howpublished = {\url{https://www.fishbase.se/summary/Crystallaria-asprella.html}}
}