Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto Hironaga and Masuda Tsutomu and Matsumoto Setsuko,Spectral Analysis of Coupled Oscillations by a Method of Fast Fourier Transform,Journal of the Physics Education Society of Japan,03856992,The Physics Education Society of Japan,1996,44,4,401-405,https://cir.nii.ac.jp/crid/1390282679492242816,https://doi.org/10.20653/pesj.44.4_401