The kinematics of intracluster planetary nebulae and the on-going subcluster merger in the Coma cluster coreO. Gerhard, M. Arnaboldi, K. C. Freeman, S. Okamura, N. Kashikawa and N. YasudaA&A, 468 3 (2007) 815-822DOI: https://doi.org/10.1051/0004-6361:20066484
