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

@Book{Kooy2010,
 author = {Kooijman, S.A.L.M.},
 year = {2010},
 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
 howpublished = {\url{../../../bib/Kooy2010.html}}
} 

@Article{CranCorn2020,
 doi = {10.1139/cjfas-2018-0404},
 author = {A. H. Underhill},
 year = {1949},
 title = {Studies on the Development, Growth and Maturity of the Chain Pickerel, \emph{Esox niger} {L}esueur},
 journal = {The Journal of Wildlife Management},
 volume = {13},
 pages = {377-391}
} 

@Book{WallYeag1990,
 author = {Robert Wallus and Bruce L. Yeager and Thomas P. Simon},
 year = {1990},
 title  = {The reproductive biology and early life history of fishes of the Ohio river},
 publisher = {Tennessee Valley Authority},
 volume  = {1: Acipenseridae through Esocidae}
} 

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