1. Phthalocyanines—Properties and Applications; Leznoff, C. C.; Lever, A. B. P., Eds.; VCH: New York, 1989, Vol. 1; 1993, Vols. 2 and 3; 1996, Vol. 4.
2. Phthalocyanine Materials: Synthesis, Structure and Function;McKeown,1998
3. Birkett, D. Chem. Ind. 2000, March 6, 178
4. Organic Optical Limiter with a Strong Nonlinear Absorptive Response