Vaassen, E. H. J. (maastricht University, Meuwissen, Roger (maastricht University, Schelleman, Caren (maastricht University (1) Stern, Roger, Byrne, John, Mantlo, Bill (1) Mason, Roger, Ltd, Roger Mason (1) Collins, Roger (university Of Edinburgh (1) Hanlon, Roger T., Messenger, John B. (university Of Cambridge) (1)