Walliser, Jan Regulation of withdrawals in individual account systems / Jan Walliser - Washington : International Monetary Fund (IMF) , 1999 - 24p : ill. ; 30 cm. - IMF Working Paper No. WP-99/153 . Includes bibliographical references. Subjects--Topical Terms: Pension schemesAccounting Gov. Doc. Class. No.: UN IMF WP-99-153