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

@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{LiaoZhou2010,
 author = {Wen Bo Liao and Cai Quan Zhou and Zhi Song Yang and Jin Chu Hu and Xin Lu},
 year = {2010},
 title = {Age, size and growth in two populations of the darkspotted frog \emph{Rana nigromaculata} at different altitudes in southwestern {C}hina},
 journal = {Herpetological Journal},
 volume = {20},
 pages = {77-82}
} 

@Book{Gunt1990,
 author = {G\"{u}nther, R.},
 year = {1990},
 title  = {Die Wasserfr\"{o}sche Europas},
 publisher = {A. Ziemsen Verlag},
 sereis = {Die Neue Brehm Buecherei}}
} 

@Misc{AnAge,
 howpublished = {\url{http://genomics.senescence.info/species/entry.php?species=Pelophylax_nigromaculatus}}
}