Light element non-LTE abundances of λ Bootis stars - II. Nitrogen and sulphur I. Kamp, I. Kh. Iliev, E. Paunzen, O. I. Pintado, E. Solano and I. S. Barzova A&A, 375 3 (2001) 899-908 Published online: 15 September 2001 DOI: 10.1051/0004-6361:20010886