1. (a) Review on azulenes: in Methoden der Organischen Chemie (Houhen-Weyl, Ed: ) Vol. V/2c, p. 127, Thieme Verlag, Stuttgart 1985.
2. (a) Reviews on polyazulenes: in Handbook of Conducting Polymers (Ed: ), Vol. 1, p. 81, Marcel Dekker, New York 1987.
3. Electrically conducting polymers: a review of the electropolymerization reaction, of the effects of chemical structure on polymer film properties, and of applications towards technology
4. (a) For comprehensive overviews of the electronic properties of azulenes, see: in Non-Benzenoid Aromatic Compounds (Ed: ), p. 151, Interscicnce, New York 1959.
5. Why is azulene blue and anthracene white? a simple mo picture