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

@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{MassRoch2008,
 author = {Massaro, F. C. and Rocha, O.},
 year = {2008},
 title = {Development and population growth of \emph{Hydra viridissima} Pallas, 1766 ({C}nidaria, {H}ydrozoa) in the laboratory},
 journal = {Braz. J. Biol.},
 volume = {68},
 number = {2},
 pages = {379--383}
} 

@Article{Kali2011,
 author = {Kaliszewicz, A.},
 year = {2011},
 title = {Interference of asexual and sexual reproduction in the green hydra},
 journal = {Ecol Res},
 volume = {26},
 pages = {147-152}
}