MAP20080044459 Madigan, Peter O Brothers, where art thou? / Peter Madigan and Nick Sawyer En: Risk : risk management, derivatives, structured products. - Southwick, West Sussex : Incisive Financial Publishing, 2007- = ISSN 0952-8776. - 15/10/2008 Tomo 21 Número 10 - 2008 I. Sawyer, Nick .