IRREGULARITIES IN THE YRAST LINE OF 156Er T. Byrski, F. A. Beck, C. Gehringer, J. C. Merdinger, Y. Schutz et J.P. VivienJ. Phys. Colloques, 41 C10 (1980) C10-98-C10-101DOI: https://doi.org/10.1051/jphyscol:19801010