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

@Misc{Wiki_nl,
 howpublished = {\url{https://nl.wikipedia.org/wiki/Gibbula_umbilicalis}}
} 

@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}}
} 

@Misc{marlin,
 howpublished = {\url{http://www.marlin.ac.uk/species/detail/1481}}
} 

@Article{Will1964,
 author = {Williams, E. E.},
 year = {1964},
 title = {The Growth and Distribution of \emph{Gibbula umbilicalis} ({D}a {C}osta) on a Rocky Shore in {W}ales},
 journal = {Journal of Animal Ecology},
 volume = {33},
 pages = {433--442}
} 

@Article{Lebo1937,
 author = {Lebour, M. V.},
 year = {1935},
 title = {The eggs and larvae of the British prosobranchs with special reference to those living in the plankton},
 journal = {J. Mar. Biol. Ass. UK},
 volume = {22},
 pages = {105--116}
} 

@PhDthesis{Noke2016,
 author = {R. Noke},
 year = {2016},
 title = {What is driving the range extension of \emph{Gibbula umbilicalis} ({G}astropoda, {T}rochidae) in the eastern {E}nglish {C}hannel?},
 school = {Bournemouth University}
} 

@Article{DonnBrun2016,
 author = {L. Donnarumma and R. Bruno and A. Terlizziand G. F. Russo},
 year = {2016},
 title = {Population ecology of \emph{Gibbula umbilicaris} and \emph{Gibbula ardens} ({G}astropoda: {T}rochidae) in a \emph{Posidonia oceanica} seagrass bed},
 journal = {Italian Journal of Zoology},
 volume = {83},
 pages = {103--112}
} 

@Article{RobiGree2010,
 author = {L. A. Robinson and S. P. R. Greenstreet and H. Reiss and R. Callaway and J. Craeymeersch and I. de Boois and S. Degraer and S. Ehrich and H. M. Fraser and A. Goffin and I. Kroncke and L. L. Jorgenson and M.R. Robertson  and J. Lancaster},
 year = {2010},
 title = {Length-weight relationships of 216 {N}orth {S}ea benthic invertebrates and fish},
 journal = {J. Mar. Biol. Ass. UK},
 volume = {90},
 pages = {95-104}
}