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

@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{MarqEstb1997,
 author = {Rafael M\'{a}rquez and Marisa Esteban and Jacques Castanet},
 year = {1997},
 title = {Sexual Size Dimorphism and Age in the Midwife Toads \emph{Alytes obstetricans} and \emph{A. cisternasii}},
 journal = {Journal of Herpetology},
 volume = {31(1)},
 pages = {52-59}
} 

@Misc{EoL,
 howpublished = {\url{http://eol.org/pages/330761/overview}}
} 

@Misc{ADW,
 howpublished = {\url{http://animaldiversity.org/accounts/Alytes_obstetricans/}}
} 

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