Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Michal K. Cyrañski and Tadeusz M. Krygowski and Alan R. Katritzky and Paul von Ragué Schleyer,To What Extent Can Aromaticity Be Defined Uniquely?,The Journal of Organic Chemistry,0022-3263,American Chemical Society (ACS),2002-01-30,67,4,1333-1338,https://cir.nii.ac.jp/crid/1360011144628416256,https://doi.org/10.1021/jo016255s