@inproceedings (etreeimr02, author = "Tiankai Tu and David O'Hallaron and Julio Lopez", title = "Etree: A Database-oriented Method for Generating Large Octree Meshes" , booktitle= "Proceedings of the Eleventh International Meshing Roundtable", month = sep, year = 2002 , address = "Ithaca, NY" , pages = "127--138" , )