Pseudocritical NMR frequency shift above the normal-incommensurate phase transition F. Decker, K.-P. Holzer, P. Mischo, J. Petersson and D. Schüßler Eur. Phys. J. B, 8 4 (1999) 507-510 Published online: 15 April 1999 DOI: 10.1007/s100510050718