TY  - RPRT
TI  - Using a Quadtree Algorithm To Assess Line of Sight
AU  - Gonzalez, Joseph
AU  - Chamberlain, Robert
AU  - Tailor, Eric
AU  - Gutt, Gary
PY  - 2006
UR  - https://ntrs.nasa.gov/citations/20100014100
ID  - 20100014100
ER  -