MAP20080023645 Catastrophic losses and insurer profitability : evidence from 9-11 / Xuanjuan Chen En: The Journal of risk and insurance. - Nueva York : The American Risk and Insurance Association, 1964- = ISSN 0022-4367. - 01/03/2008 Tomo 75 Número 1 - 2008 I. Chen, Xuanjuan .