Hiroki Sekine Tetsuro Nosaka Yasuo Hatano Masaki Takeda Toshinobu Kaneko A Strength Evaluation of a Pseudorandom Number Generator MUGI against Linear Cryptanalysis. 16-24 http://search.ieice.org/bin/summary.php?id=e88-a_1_16&category=D&year=2005&lang=E&abst= 2005 88-A IEICE Transactions 1 db/journals/ieicet/ieicet88a.html#SekineNHTK05