Heat Index Bibliography 

1. "Cellular Telephone: Definition and Much More." Answers.com. Answers.com. 23 Jun 2008.http://www.answers.com/topic/mobile-phone?cat=technology.
2. "Number of Cell Phones in the US." Hypertextbook.com. 23 Jun 2008 http://hypertextbook.com/facts/2002/BogusiaGrzywac.shtml 
3. Gow, G., and Smith, R. K. (2006). Mobile and Wireless Communication: An Introduction, McGraw Hill: 22-23.
4. Bedell, P. (2001). Wireless Crash Course. Wireless Crash Course, McGraw-Hill Professional: 24.
5. "2G - cdmaOne." CDG: Technology  Retrieved 9 Jul 2008, 2008, from http://www.cdg.org/technology/2g.asp.
6. “THE TOPIC: Cell Phones and Driving, October 2007”. http://waldo.villagesoup.com/financial/story.cfm?storyID=100892
7. “The Future of Cell Phones”. http://www.pcworld.com/article/126854/the_future_of_cell_phones.html
8. “COPLEY NEWS SERVICE | January 10, 2005” http://www.infowars.com/articles/bb/cellphones_as_credit_cards.htm
9. “Timeline of Cell Phones and Wireless Communications” http://www.cell-phone-accessories.com/timeline-cell-phones.html
10. “School Board of Tomorrow| September 2000” http://www.electronic-school.com/2000/09/0900sbot.html
11. “Next generation phones | Publication Date: 17 May, 2008 | Category: Shopping”http://shopibel.com/shopping/next-generation-phones
12. “Cell Phones Of The Future | pictures”http://funtasticus.com/20070928/cell-phones-of-the-future/