Observation of M3 isomeric transition from 156mPm through the βdecay of 156Nd M. Shibata, O. Suematsu, Y. Kojima, K. Kawade, A. Taniguchi and Y. Kawase Eur. Phys. J. A, 31 2 (2007) 171-176 Published online: 12 February 2007 DOI: 10.1140/epja/i2006-10213-7