Daniel Spoonhower Guy E. Blelloch Phillip B. Gibbons Robert Harper Beyond nested parallelism: tight bounds on work-stealing overheads for parallel futures. 91-100 2009 SPAA http://doi.acm.org/10.1145/1583991.1584019 conf/spaa/2009 db/conf/spaa/spaa2009.html#SpoonhowerBGH09