1. (a) A. Thomas, Phthalocyanine Research and Applications, CRS Press, Boca Raton, 1990
2. (b) N.B. McKeown, Phthalocyanine Materials: Synthesis, Structure and Function, CUP, Cambridge, 1998
3. World Scientific Publishing: Singapore, Vol. 3, pp 1-323, 2010.
4. (a) A. Thomas, Phthalocyanine Research and Applications, CRS Press, Boca Raton, 1990;
5. (b) N.B. McKeown, Phthalocyanine Materials: Synthesis, Structure and Function, CUP, Cambridge, 1998;