@article{RO_2006__40_3_303_0,
     author = {Papa Quiroz, Erik A. and Oliveira, Paolo Roberto},
     title = {A new barrier for a class of semidefinite problems},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {303--323},
     publisher = {EDP-Sciences},
     volume = {40},
     number = {3},
     year = {2006},
     doi = {10.1051/ro:2006022},
     mrnumber = {2276161},
     zbl = {1190.90277},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ro:2006022/}
}