Hyperfine structure in the atomic spectrum of niobium - I: Experimental investigationA. Bouzed, S. Kröger, D. Zimmermann, H.-D. Kronfeldt and G. GuthöhrleinEur. Phys. J. D, 23 1 (2003) 57-62DOI: https://doi.org/10.1140/epjd/e2003-00026-8