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

@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{Ross1984,
 author = {G. J. Rossouw},
 year = {1984},
 title  = {Age and growth of the sand shark, \emph{Rhinobatos annulatus},
 in {A}lgoa {B}ay, {S}outh {A}frica},
 journal = {J. Fish Biol.},
 volume = {25},
 pages = {213-222}
} 

@Misc{fishbase,
 howpublished = {\url{https://www.fishbase.de/summary/Acroteriobatus-annulatus.html}}
}