Liu, S.-I.S.-I.LiuLee, J.-L.J.-L.LeeSHEN-IUAN LIU2020-06-112020-06-111997https://scholars.lib.ntu.edu.tw/handle/123456789/499833Voltage-mode universal filters using two current conveyorsjournal article10.1080/0020721971361472-s2.0-0031076706https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031076706&doi=10.1080%2f002072197136147&partnerID=40&md5=6371a896f2b32b0f308c247274394ca9