Precise energy of the 9.4 keV gamma transition observed in the 83Rb decay M. Slezák, D. Vénos, O. Lebeda and T. Trojek Eur. Phys. J. A, 48 2 (2012) 12 Published online: 08 February 2012 DOI: 10.1140/epja/i2012-12012-y