Abstract
This special issue of the International Journal of Control is dedicated to Sir Alistair MacFarlane. It contains a collection of papers on systems and multivariable control contributed by a number of people, including ex-students and collaborators of Alistair, or those who know Alistair's work, reflecting his diverse interests. During his time in Cambridge, Alistair was Editor of the International Journal of Control.
Acknowledgements
We would like to thank Eric Rogers, Editor of the International Journal of Control for his support in developing this special issue and for the discussions and suggestions at the early stages of this project. We would also like to thank all colleagues contributing to this special issue for their responsiveness to our many requests linked to the production of this special issue.