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Aarts, Gert, G. Aarts, C.R Allton, R. Morrin, A. Ó Cais, M.B Oktay, M.J Peardon, and J.I Skullerud. "Charmonium Spectral Functions in Two-flavour QCD." Nuclear Physics A "A785", no. 1-2 (2006): 198-201.

Aarts, Gert, et al. "Charmonium Spectral Functions in Two-flavour QCD." Nuclear Physics A "A785".1-2 (2006): 198-201.