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APA Citation
Motoi, K., Oshima, N., Kitsunezuka, M., & Kunihiro, K. (2017). a 0.4–3-GHz nested bandpass filter and a 1.1–1.7-GHz balun bandpass filter using tunable band-switching technique. International journal of microwave and wireless technologies, 9(6), 1279–1291. http://access.bl.uk/ark:/81055/vdc_100049477720.0x000017