IRAS 11472−0800: an extremely depleted pulsating binary post-AGB star H. Van Winckel, B. J. Hrivnak, N. Gorlova, C. Gielen and W. Lu A&A, 542 (2012) A53 Published online: 05 June 2012 DOI: 10.1051/0004-6361/201218835