N. Bonde
Geological Institute, University of Copenhagen
Bonde N., and Christiansen P., 2003, The detailed anatomy of Rhamphorhyhchus: axial pneumaticity and its implications: In: Evolution and Palaeobiology of Pterosaurs, edited by Buffetaut, E., and Mazin, J.-M., Geological Society Special Publication, n. 217, p. 217-232.