This research has been founded by the Mexican Council of Science and Technology (CONACYT). Special thanks to Martin Brace, Noel Byrne, Phil Rowe, Nick Shubotham, Alwyn Hines, John Powell and Rod Dewey from the collaborative companies. The authors would like to thank the referees whose suggestions helped in the improvement of the final version of the manuscript.
Emerald Group Publishing Limited
Copyright © 2004, Emerald Group Publishing Limited