Half-life measurements of 137, 139Cs excited nuclear states B. Roussière, M. A. Cardona, I. Deloncle, D. Hojman, J. Kiener, P. Petkov, D. Tonev, Ts. Venkova and ALTO Collaboration Eur. Phys. J. A, 47 9 (2011) 106 Published online: 19 September 2011 DOI: 10.1140/epja/i2011-11106-4