Spectroscopic analyses of the blue hook stars in NGC 2808: A more stringent test of the late hot flasher scenarioS. Moehler, A. V. Sweigart, W. B. Landsman, N. J. Hammer and S. DreizlerA&A, 415 1 (2004) 313-323DOI: https://doi.org/10.1051/0004-6361:20034505