1. AN INSTANCE OF TRIVALENT CARBON: TRIPHENYLMETHYL.
2. Stable Radicals: Fundamentals and Applied Aspects of Odd-Electron Compounds, ed. G. R. Hicks, John Wiley & Sons Ltd, West Sussex, UK, 2010
3. Diradicals
4. Recent Progress in Quinoidal Singlet Biradical Molecules
5. B. L.
Booth
, D. F.Eaton, T. C.Felder, B. M.Monroe and P. S.Strilko, Photochemistry, History and Commercial Applications of Hexaarylbiimidazoles, Elsevier, Delaware, USA, 2006