Reanalysis and semi-empirical predictions of the hyperfine structure of 91Zrl in the model space (4d + 5s)4 S. Bouazza, J. Dembczynski, E. Stachowska, G. Szawiola and J. Ruczkowski Eur. Phys. J. D, 4 1 (1998) 39-46 Published online: 15 October 1998 DOI: 10.1007/s100530050182