Title: ETSI BRAN Liaison Letter Document Number: IEEE 802.16l-00/19 URL: <http://ieee802.org/16/liaison/docs/80216l-00_19.pdf> Source: Roger Marks Title: ETSI BRAN Liaison Letter Document Number: IEEE 802.16l-00/21 URL: <http://ieee802.org/16/liaison/docs/80216l-00_21.pdf> Source: Roger Marks