1. Ackroyd P (2000) London: the biography. Nan A. Talese, New York
2. Adger WN (2006) Vulnerability. Glob Environ Chang 16:216–281
3. Agyeman J, Bullard RD, Evans B (2003) Just sustainabilities: development in an unequal world. The MIT Press, Cambridge
4. Anacker KB, Morrow-Jones HA (2005) Neighborhood factors associated with same-sex households in US cities. Urban Geogr 26:385–409
5. Bailey L (2004) Aging Americans: stranded without options. Surface transportation policy report. Available online http://www.transact.org/library/reports_html/seniors/aging.pdf