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

@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{FranMacc2003,
 author = {P. Franzoi and R. Maccagnani and R. Rossi and V. U. Ceccherelli},
 year = {2003},
 title = {Life cycles and feeding habits of \emph{Syngnathus taenionotus} and \emph{S. abaster} ({P}isces, {S}yngnathidae) in a brackish bay of the {P}O {R}iver {D}elta ({A}driatic {S}ea)},
 journal = {Environmental Biology of Fishes},
 volume = {67},
 pages = {23–33}
} 

@Misc{fishbase,
 howpublished = {\url{http://www.fishbase.se/summary/Syngnathus-abaster.html}}
}