"J. Sugiyama,T. Nakamura,Noriyoshi Ishii,T. Nishikawa,M. Oka","Mixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules",,"Physical Review",,"Vol. D76",,"pp. 114010",2008,
"T. Nakamura,P. Gubler,M. Oka","Chiral Symmetry of Nucleon Resonances in QCD sum rules",,"Physical Review",,"Vol. D78",,"pp. 14010",2008,
"T. Nakamura,J. Sugiyama,T. Nishikawa,M. Oka,N. Ishii","Exotic quark structure of Lambda(1405) in QCD sum rule",,"Physics Letters",,"Vol. B662",,"pp. 132-138",2008,