1. The world in your pocket, The economist: A survey of telecommunications, 1999, pp. 1-26.
2. GSM World homepage at http://www.gsmworld.com.
3. FCC E911 homepage at http://www.fcc.gov/911/enhanced.
4. and Planar inverted-F antenna design for W-CDMA, Proceedings Asia Pacific Microwave Conference 2002, Taipei, Taiwan, P.R.C., 2001, pp. 950-053.