Central exclusive χ c meson production at the Tevatron revisitedL. A. Harland-Lang, V. A. Khoze, M. G. Ryskin and W. J. StirlingEur. Phys. J. C, 65 3-4 (2010) 433-448DOI: https://doi.org/10.1140/epjc/s10052-009-1214-9