The magnetic structure of orthorhombic ErNi2B2C C. Detlefs, D. L. Abernathy, G. Grübel and P. C. Canfield Europhys. Lett., 47 3 (1999) 352-357 Published online: 01 September 2002 DOI: 10.1209/epl/i1999-00396-3