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

@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}}
} 

@Phdthesis{Gros2001,
 author = {Grosjean, P.},
 year = {2001},
 title = {Growth model of the reared sea urchin \emph{Paracentrotus lividus} ({L}amarck, 1816)},
 school = {Univ. Libre de Bruxelles}
} 

@Article{CellFena1990,
 author = {Cellario, C. and Fenaux, L.},
 year = {1990},
 title = {\emph{Paracentrotus lividus} ({L}amarck) in culture (larval and benthic phases): parameters of growth observe during two years following metamorphosis.},
 journal = {Aquaculture},
 volume = {84},
 pages = {173--188}
} 

@Misc{ecol_mar,
 howpublished = {\url{http://www.ecologiamarina.it/Portals/0/book_of_abstracts.pdf}}
}