Walter Greiner, Berndt Muller ; with a foreword by D.A. Bromley. Walter Greiner, Joachim Reinhardt ; with a foreword by D.A. Bromley. Walter Greiner, Stefan Schramm, Eckart Stein ; with a foreword by D.A. Bromley. Walter Greiner ; foreword by D. Allan Bromley. Peter Meinhardt ; with a foreword by James Mould.