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Seong CY, Widrow B.Seong CY, et al.IEEE Trans Syst Man Cybern B Cybern. 2001;31(4):502-13. doi: 10.1109/3477.938256.IEEE Trans Syst Man Cybern B Cybern. 2001.PMID: 18244817
Seong CY, Widrow B.Seong CY, et al.IEEE Trans Syst Man Cybern B Cybern. 2001;31(4):490-501. doi: 10.1109/3477.938255.IEEE Trans Syst Man Cybern B Cybern. 2001.PMID: 18244816