1. J.W. Buchler, in: D. Dolphin (Ed.), The Porphyrins, vol. 1, Academic Press, New York, 1978, p. 390
2. J.W. Buchler, in: K.M. Smith (Ed.), Porphyrins and Metalloporphyrins, Elsevier, Amsterdam, 1975, p. 157.
3. J.K.M. Sanders, N. Bampos, Z. Clyde-Watson, S.L. Darling, J.C. Hawley, H.-J. Kim, C.C. Mak, S.J. Webb, in: K.M. Kadish, K.M. Smith, R. Guilard (Eds.), The Porphyrin Handbook, vol. 3, Academic Press, San Diego, 2000, p. 37.
4. Metalloid porphyrins and phthalocyanines