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

@Misc{idtools,
 howpublished = {\url{http://idtools.org/id/mollusc/factsheet.php?name=Cernuella spp.}}
} 

@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{Pome1969,
 author = {Pomeroy, D. E.},
 year = {1969},
 title = {Some aspects of the ecology of the land snail, \emph{Helicella virgata},
 in {S}outh {A}ustralia},
 journal = {Austr. J. Zool.},
 volume = {17},
 pages = {495--514}
} 

@Misc{tijd,
 howpublished = {\url{http://natuurtijdschriften.nl/search?identifier=596524}}
} 

@Misc{ipm,
 howpublished = {\url{http://www.ipm.msu.edu/uploads/files/Forecasting_invasion_risks/vineyardSnail.pdf}}
}