This author has not been identified. Look up 'David Aspinall' in GoogleThis author has not been identified. Look up 'Lennart Beringer' in GoogleThis author has not been identified. Look up 'Martin Hofmann' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Hans-Wolfgang Loidl' in GoogleThis author has not been identified. Look up 'Alberto Momigliano' in Google