Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
School of Biosciences, University of Westminster, 115 New Cavendish Street, London, W1M 8JS, UK
Fachhochschule Osnabrück, Studiengang Bodenwissenschaften, Am Krümpel 33, 49090, Osnabrtick, Germany (currently at: School of Biosciences, University of Westminster, 115 New Cavendish Street, London, W1M 8JS, UK)
Dipartimento di Biologia, Università degli studi di Milano, Via Celoria 26, Milano, Italy