title: Sinha and Amaratunga reply.
authors.affiliation: Department of Engineering, Division of Electrical Engineering, University of Cambridge, 9, J.J. Thomson Avenue, CB3 0FA Cambridge, United Kingdom.
authors.forename: Dhiraj
authors.initials: D
authors.lastname: Sinha
authors.affiliation: Department of Engineering, Division of Electrical Engineering, University of Cambridge, 9, J.J. Thomson Avenue, CB3 0FA Cambridge, United Kingdom.
authors.forename: Gehan A J
authors.initials: GA
authors.lastname: Amaratunga