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

@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{RuzyWurt1998,
 author = {James R. Ruzycki and Wayne A. Wurtsbaugh and Clyde Lay},
 year = {1998},
 title = {Reproductive ecology and early life history of the lacustrine sculpin, \emph{Cottus extensus} ({T}eleostei, {C}ottidae},
 journal = {Envir. Biol. Fishes},
 volume = {53},
 pages = {117-127}
} 

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