@unpublished{BassHartnackStoeckeretal.2006, author = {Steffen A. Bass and Christoph Hartnack and Horst St{\"o}cker and Walter Greiner}, title = {Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV/nucl.}, institution = {Physik}, year = {2006}, }