J Hough (Glasgow U.), BJ Meers (Glasgow U.), GP Newton (Glasgow U.), NA Robertson (Glasgow U.), H Ward (Glasgow U.), MW Hamilton (Glasgow U.), G Leuchs (Munich, Max Planck Inst. Quantenopt.), TM Niebauer (Munich, Max Planck Inst. Quantenopt.), A Rudiger (Munich, Max Planck Inst. Quantenopt.), R Schilling (Munich, Max Planck Inst. Quantenopt.), L Schnupp (Munich, Max Planck Inst. Quantenopt.), H Walther (Munich, Max Planck Inst. Quantenopt.), W Winkler (Munich, Max Planck Inst. Quantenopt.), BF Schutz (Wales U., Cardiff), J Ehlers (Munich, Max Planck Inst.), P Kafka (Munich, Max Planck Inst.), G Schafer (Munich, Max Planck Inst.), I Schutz (Hannover U.), H Welling (Hannover U.), J R J Bennett (Rutherford), IF Corbett (Rutherford), BWH Edwards (Rutherford), R J S Greenhalgh (Rutherford), V Kose (Braunschweig, Phys. Tech. Bund.)