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

@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{fishbase,
 howpublished = {\url{https://www.fishbase.se/summary/Potamotrygon-leopoldi}}
} 

@article{CharSant2018,
 doi = {10.1111/jfb.13635},
 author = {P. Charvet and F. M. Santana and K. L. De Lima and R. Lessa},
 title = {Age and growth of the endemic {X}ingu {R}iver stingray \emph{Potamotrygon leopoldi} validated using fluorescent dyes},
 year = {2018},
 journal = {Journal of Fish Biology},
 volume = {92},
 pages = {1985-1999}
}