A. Oota, R. Inada, N. Inagaki, Y. Ogawa, Y. Nakamura, I. Fukunaga, P. X. Zhang. Significant reduction in AC transport self-field losses of Ag-sheathed Bi2223 tapes achieved by changing filament arrangements. Superconductor Science and Technology. 2004. 17. 5. S440-S444