1. Professor, Univ. of Central Lancashire, Grenfell-Baines School of Architecture, Construction and Environment, Preston PR1 2HE, U.K. (corresponding author).
2. Univ. of Wolverhampton, Wulfruna St., Wolverhampton WV1 1LY, U.K.
3. Professor, Jones Day, 21 Tudor St., London EC4Y 0DJ, U.K.