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

@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{KhanZahr2016,
 doi = {10.1111/azo.12157},
 author = {Eraqi R. Khannoon and Oldrich Zahradnicek},
 year = {2016},
 title = {Postovipositional development of the sand snake \emph{Psammophis sibilans} ({S}erpentes: {L}amprophiidae) in comparison with other snake species},
 journal = {Acta Zoologica},
 volume = {0},
 pages = {1-10}
} 

@Misc{EoL,
 howpublished = {\url{https://eol.org/pages/459775}}
} 

@Book{Bran1992,
 author = {Branch, B.},
 year = {1992},
 title  = {Field guide to the snakes and other reptiles of South Africa},
 publisher = {New Holland (Publishers) Ltd}
} 

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