Gornaya, J., I. Selyuzhenkov, A. Taranenko, and E. Kashirin. “Elliptic Flow of π – Measured With the Event Plane Method in Pb–Pb Collisions at 40A Ge in the NA49 Experiment at the CERN SPS”. KnE Energy, Vol. 3, no. 1, Apr. 2018, pp. 441–446, doi:10.18502/ken.v3i1.1780.