TI - Double charm states in QCD sum rules PY - 2012 AU - Navarra, Fernando Silveira AU - Nielsen, Marina T2 - International Conference on Hadron Physics - TROIA J2 - Journal of Physics: Conference Series UR - http://iopscience.iop.org/1742-6596/348/1/012008/pdf/1742-6596_348_1_012008.pdf PP - Bristol, England PB - IOP Publishing VL - 348 SP - 012008/1-012008/6 ER -