Christian Glaßer Alan L. Selman Samik Sengupta Reductions between Disjoint NP-Pairs. 42-53 2004 conf/coco/2004 IEEE Conference on Computational Complexity http://csdl.computer.org/comp/proceedings/ccc/2004/2120/00/21200042abs.htm db/conf/coco/coco2004.html#GlasserSS04