J. L.  Edwards, Lane, M. A., and Nielsen, E. S., ?Interoperability of biodiversity databases: Biodiversity information on every desktop?, Science, vol. 289, pp. 2312-2314, 2000.

M. A.  Lane, ?Roles of natural history collections?, Annals of the Missouri Botanical Garden, vol. 83, pp. 536-545, 1996.