NCSTRL - Look for papers such as Seth Teller's Visibility Computations in Densely Occluded Polyhedral Environments and Thomas Funkhouser's Database and Display Algorithms for Interactive Visualization of Architectural Models.
M. H. Gross, O. G. Staadt, R. Gatti: Efficient Triangular Surface Approximations using Wavelets and Quadtree Data
Structures. IEEE Transactions on Visualization and Computer Graphics, Vol 2, No. 2, pp. 130-143, 1996.
Available files: [abstract]
[gnu-compressed Postscript]
[gnu-compressed figures
in Postscript]
M. H. Gross, R. Gatti, O. G. Staadt: Fast Multiresolution Surface Meshing. Proceedings of the
IEEE Visualization '95, pp. 135-142, IEEE Computer Society Press, 1995.
Available files: [abstract]
[gnu-compressed Postscript file]
[gnu-compr. colorpage 1 in Postscript]
[gnu-compr. colorpage 2 in Postscript]
Waterloo/CGL/Image Synthesis/Papers - "Interactive Rendering with Arbitrary BRDFs using Separable Approximations" by Jan Kautz and Michael McCool and other texturing/lighting papers
Microsoft Research at SIGGRAPH '96 - Blue Screen Matting, The Lumigraph, Progressive Meshes, Talisman, Hierachical Image Caching for Accelarted Walkthroughs
frenzy's codebase - Has some nice documents on 3d math (though I did notice a couple of mistakes so be warned), a demo with source, and a 911 byte intro