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

@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{Masc2002,
 author = {Evgeny N. Maschenko},
 year = {2002},
 title  = {Individual development, biology and evolution of the woolly mammoth},
 journal = {Cranium},
 volume = {19(1)},
 pages = {4-120},
 howpublished = {\url{https://natuurtijdschriften.nl/pub/523482}}
}