MAP20100041505 Sonnenholzner, Michael Reinsurance brokers and advice quality : is there a need for regulation? / Michael Sonnenholzner, Sebastian Friese and J.-Matthias Graf v. d. Schulenburg En: The Geneva Risk and Insurance Review. - The Netherlands : The Geneva Association, 1991-2010 = ISSN 0926-4957. - 01/06/2009 Tomo 34 Número 1 - 2009 , p. 20-46