1. Valletta, Malta
2. Faculty of Business, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK
3. National Research Institute of Science and Technology for Environment and Agriculture (IRSTEA), Domaine universitaire, 2 rue de la Papeterie, F-38402 Saint-Martin-d'Hères Cedex, France, and Research Quantitative Analysis (AQR-IREA), Universitat de Barcelona, Spain
4. UOM Trust Business School, Reduit, Mauritius