1. US National Imagery and Mapping Agency, "Department of Defense (DoD) World Geodetic System 1984 (WGS 84)," 3d ed., NIMA, January 2000.
2. NENA 02-010, "Standard Formats and Protocols for ALI Data Exchange, ALI Response and GIS Mapping," February 25, 2006.
3. Universal Postal Union (UPU), "International Postal Address Components and Templates," July 2004.
4. Polk, J., Schnizlein, J., and M. Linsner, "Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information," July 2004.