MAP20120005006 Kling, A. The Impact of stochaistic volatility on pricing, hedging, and hedge efficiency of withdrawal benefit guarantees in variable annuities / A. Kling, F. Ruez, J. Rub En: Astin bulletin. - Belgium : ASTIN and AFIR Sections of the International Actuarial Association = ISSN 0515-0361. - 01/11/2011 Tomo 41 Número 2 - 2011 I. Ruez, F. . II. Rub, J. . III. Title.