@article{af-rorhp-89,
author = "Akman, Varol and Franklin, Wm Randolph",
title = "Representing Objects as Rays, or How to Pile up an Octree?",
journal = "Computers and Graphics",
volume = "13",
number = "3",
year = "1989",
pages = "373--379",
href = "\bibhref{64-cg89-rays}",
mykey = "akman",
keywords = "oct trees, measure, polyhedra, rays"
}