MAP20080021344 Guillén, Montserrat The Need to monitor customer loyalty and business risk in the European insurance industry / Montserrat Guillen, Jens Perch Nielsen, Ana María Pérez-Marín En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 01/04/2008 Tomo 33 Número 2 - 2008 I. Perch Nielsen, Jens . II. Pérez-Marín, Ana María .