@article{article02381845,
title   = {Diquark-antidiquark with open charn in QCD sum rules},
author = {Nielsen, Marina and Matheus, Ricardo D'Elia and Navarra, Fernando Silveira and Bracco, M E and Lozea, A},
year = {2006},
doi = {10.1016/j.nuclphysbps.2006.08.045},
journal   = {Nuclear Physics B-Proceedings}
}