Energy levels in 'ANTPOT.139 La' from the decay of 'ANTPOT.139 Ba' - Zamboni, C B; Medeiros, J A G; Lapolli, A L; Genezini, Frederico Antonio; Camargo, S P; Cruz, Manoel Tiago Freitas da; Zevallos-Chavez, J Y (Applied Radiation and Isotopes, 2001)