The rapid evolution of the exciting star of the Stingray nebulaN. Reindl, T. Rauch, M. Parthasarathy, K. Werner, J. W. Kruk, W.-R. Hamann, A. Sander and H. TodtA&A, 565 (2014) A40DOI: https://doi.org/10.1051/0004-6361/201323189
