MAP20080023744 Clark, Steven P. Mean reversion in net discount ratios : a study in the context of fractionally integrated models / Steven P. Clark, T. Daniel Coggin, Faith R. Neale 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. Coggin, T. Daniel . II. Neale, Faith R. .