Binaries discovered by the SPY survey - VI. Discovery of a low mass companion to the hot subluminous planetary nebula central star EGB 5 – a recently ejected common envelope?S. Geier, R. Napiwotzki, U. Heber and G. NelemansA&A, 528 (2011) L16DOI: https://doi.org/10.1051/0004-6361/201116641
