January 2006 - Bicycle Power

- users.erols.com/mshaver/bikegen.htm

- www.los-gatos.ca.us/davidbu/pedgen.html

- fleettrikes.com/

- www.sidewindercycle.com/products/EzPak.asp

- www.treehugger.com/files/2005/04/don_dunkees_diy.php

- woodenbikes.com/