A. Adams, und A. Blandford. International Journal on Digital Libraries, 4 (2):
71--81(2004)The original publication is available at www.springerlink.com.
B. Fields, S. Keith, und A. Blandford. People and Computers XVIII -- Design for Life, Part 3, Springer London, London, The original publication is available at www.springerlink.com.(2005)