The orbits of subdwarf-B + main-sequence binaries - II. Three eccentric systems; BD +29°3070, BD +34°1543 and Feige 87J. Vos, R. H. Østensen, P. Németh, E. M. Green, U. Heber and H. Van WinckelA&A, 559 (2013) A54DOI: https://doi.org/10.1051/0004-6361/201322200