"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,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,