Yang Xu Bin Liu Gao Xia Dong Lin Iteration-Shared Scheduling Algorithms Abolishing the Departure-Time-Compatible Graph in Switch-Memory-Switch Switches. 1622-1630 2007 conf/infocom/2007 INFOCOM http://dx.doi.org/10.1109/INFCOM.2007.190 db/conf/infocom/infocom2007.html#XuLXL07