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

@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{TsioKyri2002,
 doi = {10.1078/0944-2006-00049},
 author = {Tsiora, A. and Kyriakopoulou-Sklavounou, P.},
 year = {2002},
 title = {A skeletochronological study of age and growth in relation to adult size in the water frog \emph{Rana epeirotica}},
 journal = {Zoology},
 volume = {105(1},
 pages = {55–60}
} 

@Misc{amphibiaweb,
 howpublished = {\url{https://amphibiaweb.org/cgi/amphib_query?rel-common_name=like&where-scientific_name=Pelophylax+epeiroticus}}
}