. _:vb50818891 . _:vb50818890 . _:vb50818890 . _:vb50818891 . "CC/PP Implementors Guide: Privacy and Protocols" . _:vb50818892 . _:vb50818889 . _:vb50818889 . "2001-12-20" . _:vb50818892 . . . _:vb50818890 "Lalitha Suryanarayana" . _:vb50818891 "Johan Hjelm" . _:vb50818889 "Hidetaka Ohto" . . _:vb50818892 .