Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nicholas J. Turro and Peter. Lechtken,"Molecular photochemistry. LXII. Thermal generation of organic molecules in electronically excited states. Evidence for a spin forbidden, diabatic pericyclic reaction",Journal of the American Chemical Society,0002-7863,American Chemical Society (ACS),1973-01,95,1,264-266,https://cir.nii.ac.jp/crid/1360292619459030656,https://doi.org/10.1021/ja00782a059