Halflife of the first excited state (0+) of 68Ni M. Bernas, Ph. Dessagne, M. Langevin, G. Parrot, F. Pougheon, E. Quiniou et P. Roussel J. Physique Lett., 45 17 (1984) 851-855 DOI: 10.1051/jphyslet:019840045017085100