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

@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{RyanHarv1980,
 author = {Patrick M. Ryan and Harold H. Harvey},
 year = {1980},
 title = {Growth responses of yellow perch, \emph{Perca flauescens} ({M}itchill), to lake acidification in the {L}a {C}lothe {M}ountain {L}akes of {O}ntario},
 journal = {Env. Biol. Fish.},
 volume = {5(2)},
 pages = {97-108}
} 

@Misc{fishbase,
 howpublished = {\url{http://www.fishbase.org/summary/Perca-flavescens.html}}
} 

@Misc{fishesoftexas,
 howpublished = {\url{http://txstate.fishesoftexas.org/perca flavescens.htm}}
}