A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL. The file type is application/pdf.
application/pdf
永坂 栄一. "スプリングドライブの技術動向と展望(時計技術の動向と展望)." Micromechatronics 53.200 (2009) 84-99