Orbital properties of binary post-AGB starsGlenn-Michael Oomen, Hans Van Winckel, Onno Pols, Gijs Nelemans, Ana Escorza, Rajeev Manick, Devika Kamath and Christoffel WaelkensA&A, 620 (2018) A85DOI: https://doi.org/10.1051/0004-6361/201833816