Hyperfine-structure studies of the 1s22snp (n=2, 3) 3P states for the beryllium isoelectronic sequence C. Chen and B. C. Gou Eur. Phys. J. D, 54 3 (2009) 545-550 Published online: 06 June 2009 DOI: 10.1140/epjd/e2009-00158-9