Paul von Ragué Schleyer, Mariappan Manoharan, Zhi-Xiang Wang, Boggavarapu Kiran, Haijun Jiao, Ralph Puchta, Nicolaas J. R. van Eikema Hommes,
Dissected Nucleus-Independent Chemical Shift Analysis of π-Aromaticity and Antiaromaticity. Organic Letters. ,vol. 3, pp. 2465- 2468 ,(2001) ,
10.1021/OL016217V