Kraft, R. P., Roediger, E., Machacek, M., Forman, W. R., Nulsen, P. E.J., Jones, C., Churazov, E., Randall, S., Su, Y., Sheardown, A., "Stripped elliptical galaxies as probes of ICM physics : III. Deep Chandra observation of NGC 4552 - Measuring the viscosity of the intracluster medium", Astrophysical journal, 2017