MAP20080023546 Powell, Laurence S. The Role of internal capital markets in financial intermediaries : evidence from insurer groups / Lawrence S. Powell, David W. Sommer, David L. Eckles En: The Journal of risk and insurance. - Nueva York : The American Risk and Insurance Association, 1964- = ISSN 0022-4367. - 01/06/2008 Tomo 75 Número 2 - 2008 I. Sommer, David W. . II. Eckles, David L. .