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

@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{Malt2003,
 author = {Tomasz Krzysztof Maltz},
 title = {LIFE CYCLE AND POPULATION DYNAMICS OF \emph{Helicodonta obvoluta} ({O}. {F}. {M}\"{u}ller, 1774) ({G}ASTROPODA: {P}ULMONATA: {H}ELICIDAE)},
 journal = {Folia Malacologica},
 volume = {11},
 year = {2003},
 pages = {63-88}
} 

@Article{Will1976,
 author = {Phillip Williampson},
 title = {Size-weight relationships and field growth rates of the landsnail \emph{Cepaea nemoralis} {L}.},
 journal = {Journal of Animal Ecology},
 number = {3},
 volume = {45},
 year = {1976},
 pages = {875-885}
} 

@Book{Jans2015,
 author = {Bert Jansen},
 year = {2015},
 title  = {Veldgids Slakken en Mossels},
 publisher = {KNNV}
}