Hyperfine structure and isotope shifts in near-infrared transitions of atomic nitrogen R. M. Jennerich, A. N. Keiser and D. A. Tate Eur. Phys. J. D, 40 1 (2006) 81-89 Published online: 15 June 2006 DOI: 10.1140/epjd/e2006-00132-1