Louis-Noël Pouchet Cédric Bastoul Albert Cohen John Cavazos Iterative optimization in the polyhedral model: part ii, multidimensional time. 90-100 2008 PLDI http://doi.acm.org/10.1145/1375581.1375594 conf/pldi/2008 db/conf/pldi/pldi2008.html#PouchetBCC08