Hass-Klau C: Walking and the relationship to public transport. Paper presented at “Australia: Walking in the 21st Century,” February 22, 2001, Perth, Australia..
Data and statistics, National Center for Bicycling & Walking. Available at: www.bikefed.org. Accessed October 20, 2002..
Streets are for living report: key findings August 2001. Available at: www.livingstreets.org.uk/summary_report.htm. Accessed October 20, 2002..
Spilner M: Top 10 walking cities in the USA. Prevention. In press..
In 2002, the American Podiatric Medical Association initiated a “walking city competition.” The objective of the study was to identify the best cities for walking in the United States. (J Am Podiatr Med Assoc 93(2): 161-163, 2003)