Jovan Dj. Golic Vittorio Bagini Guglielmo Morgari Linear Cryptanalysis of Bluetooth Stream Cipher. 238-255 2002 conf/eurocrypt/2002 EUROCRYPT http://link.springer.de/link/service/series/0558/bibs/2332/23320238.htm db/conf/eurocrypt/eurocrypt2002.html#GolicBM02