TY - BOOK AU - Kotlikoff,Laurence J. AU - Smetters,Kent A. AU - Walliser,Jan TI - Opting out of social security and adverse selection AV - HD7091 K674O PY - 1998/// CY - Cambridge, Mass PB - National Bureau of Economic Research KW - SOCIAL SECURITY KW - UNITED STATES KW - ECONOMETRIC MODELS KW - PRIVATIZATION KW - ECONOMICS KW - RESEARCH ER -