Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okumura M. and Yamanaka Y.,THE ANALYSIS OF NAMBU-GOLDSTONE MODE IN TRAPPED BOSE-EINSTEIN CONDENSATES,Soryushiron Kenkyu Electronics,03711838,Soryushiron Kenkyu Editorial Office,2002,105,1,A89-A91,https://cir.nii.ac.jp/crid/1390001204069027456,https://doi.org/10.24532/soken.105.1_a89