I received the article. Thanks for your quick response and all of your help. Thanks, Mutty Sharfi Internal Dosimetry Mound Site 937-865-3423 office 937-865-3144 fax sharmm@doe-md.gov ************************************************************************ The RADSAFE Frequently Asked Questions list, archives and subscription information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html