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

@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{LeonTsik2009,
 doi = {10.1111/j.1439-0426.2009.01311.x},
 author = {Leonardos, I. D. and Tsikliras, A. C. and Batzakas, I. and Ntakis, A. and Liousia, V.},
 year  = {2009},
 title = {Life-history characteristics of the endangered {A}ristotle's catfish (\emph{Silurus aristotelis} {G}arman, 1890), {L}ake {P}amvotis, north-western {G}reece},
 journal = {Journal of Applied Ichthyology},
 volume = {25(6)},
 pages = {746–751}
} 

@Misc{fishbase,
 howpublished = {\url{http://www.fishbase.org/summary/Silurus_aristotelis}}
}