Hyperfine structure measurements of neutral niobium with Fourier transform spectroscopyS. Kröger, A. Er, I. K. Öztürk, G. Başar, A. Jarmola, R. Ferber, M. Tamanis and L. ZačsA&A, 516 (2010) A70DOI: https://doi.org/10.1051/0004-6361/200913922
