Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takefumi Hara and Takashi Ishiwata and Kinichi Obi and Ikuzo Tanaka,An optical–optical double resonance spectroscopy of Br2: Observation of the 1g(3P2) ion-pair state,The Journal of Chemical Physics,0021-9606,AIP Publishing,1987-09-01,87,,2513-2521,https://cir.nii.ac.jp/crid/1870583643143714432,https://doi.org/10.1063/1.453720