title: Comment on "Negative refraction at optical frequencies in nonmagnetic two-component molecular media".
authors.affiliation: University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom. T.Mackay@ed.ac.uk
authors.forename: Tom G
authors.initials: TG
authors.lastname: Mackay
authors.forename: Akhlesh
authors.initials: A
authors.lastname: Lakhtakia