"Air-Stable Redox-Active Neutral Radicals: Topological Symmetry Control of Electronic-Spin, Multicentered Chemical Bonding, and Organic Battery Application"
S. Nishida, Y. Morita Organic Redox Systems: Synthesis, Properties, and Applications
, edited by T. Nishinaga, Wiley, Chapter 6, pp 177-244, Dec, 2015