Erratum to: Analysis of the neutralino system in supersymmetric theories S. Y. Choi, J. Kalinowski, G. Moortgat-Pick and P. M. Zerwas Eur. Phys. J. C, 23 4 (2002) 769-772 Published online: 05 April 2002 DOI: 10.1007/s100520200925