Observation of M3 isomeric transition from 156mPm through the βdecay of 156NdM. Shibata, O. Suematsu, Y. Kojima, K. Kawade, A. Taniguchi and Y. KawaseEur. Phys. J. A, 31 2 (2007) 171-176DOI: https://doi.org/10.1140/epja/i2006-10213-7