Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) F. Riehle and J. Ishikawa and J. Helmcke,Suppression of a Recoil Component in Nonlinear Doppler-Free Spectroscopy,計量研究所報告,03686051,つくば : 工業技術院計量研究所,1990-04,39,2,p233-236,https://cir.nii.ac.jp/crid/1520573330751452928,