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

@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{HaleLowe2008,
 doi = {10.1111/j.1095-8649.2008.01940.x},
 author = {L. F. Hale and C. G. Lowe},
 year = {2008},
 title  = {Age and growth of the round stingray \emph{Urobatis halleri} at {S}eal {B}each, {C}alifornia},
 journal = {Journal of Fish Biology},
 volume = {73},
 pages = {510-523}
} 

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

@Misc{floridamuseum,
 howpublished = {\url{https://www.floridamuseum.ufl.edu/discover-fish/species-profiles/urobatis-halleri/}}
}