Yuxiong He Wen-Jing Hsu Charles E. Leiserson Provably Efficient Two-Level Adaptive Scheduling. 1-32 2006 conf/jsspp/2006 JSSPP http://dx.doi.org/10.1007/978-3-540-71035-6_1 db/conf/jsspp/jsspp2006.html#HeHL06