Nebojsa Gvozdenovic Monique Laurent Frank Vallentin Block-diagonal semidefinite programming hierarchies for 0/1 programming. 27-31 2009 37 Oper. Res. Lett. 1 http://dx.doi.org/10.1016/j.orl.2008.10.003 db/journals/orl/orl37.html#GvozdenovicLV09