Ewan Fleischmann Michael Gorski Stefan Lucks Memoryless Related-Key Boomerang Attack on 39-Round SHACAL-2. 310-323 2009 ISPEC http://dx.doi.org/10.1007/978-3-642-00843-6_27 conf/ispec/2009 db/conf/ispec/ispec2009.html#FleischmannGL09a