De–excitation of compound nuclei with A around 56: reduction of the emission barriers for protons and alpha particles P. Jänker, H. Leitz, K.E.G. Löbner, M. Moralles and H.G. ThiesEur. Phys. J. A, 4 2 (1999) 147-155DOI: https://doi.org/10.1007/s100500050213