Magnetic structure of the spin-1/2 layer compound NaNiO2 C. Darie, P. Bordet, S. de Brion, M. Holzapfel, O. Isnard, A. Lecchi, J. E. Lorenzo and E. Suard Eur. Phys. J. B, 43 2 (2005) 159-162 Published online: 25 February 2005 DOI: 10.1140/epjb/e2005-00038-2