Hyperfine-structure measurements and new levels evaluation in singly ionized praseodymiumB. Furmann, D. Stefańska, E. Stachowska, J. Ruczkowski and J. DembczyńskiEur. Phys. J. D, 17 3 (2001) 275-284DOI: https://doi.org/10.1007/s100530170001