@article{Havran07:138105,
   author = {Havran, V. and Bittner, J.},
   title = {{Stackless Ray Traversal for kD-Trees with Sparse Boxes}},
   journal = {Computer Graphics \& Geometry},
   year = {2007},
   volume = {9},
   number = {3},
   pages = {16--30},
   month = {December},
   ISSN = {1811-8992},
   language = {English},
   URL = {http://www.cgg-journal.com/2007-3/03.htm}
}