Stefan Dietrich Iain Boyd Parallel Scalar Optimized Direct Simulation Monte Carlo Method for Rarefied Flows on the SP-1. 181-182 1994 conf/hpcn/1994-1 HPCN db/conf/hpcn/hpcn1994-1.html#DietrichB94 http://dx.doi.org/10.1007/BFb0020369