Coxeter, H. S. M. "Self-Dual Configurations and Regular Graphs." Bull. Amer. Math. Soc.56, 413-455, 1950.Hudson,
R. W. H. T. Kummer's
Quartic Surface. Cambridge, England: Cambridge University Press, 1905. Reprinted
Cambridge, England: Cambridge University Press, 1990.
configuration formed
by the 16 ordinary double points (nodes)
of a 16-nodal Kummer surface and its 16 tropes,
which are tangent to the surface along conics. Each
trope contains six nodes and each node lies on six tropes.
