R. RAHIMI, F. MOHARRAMI, and S. HAMED RAHMANPOUR, “Investigation of Tetra(p-carboxyphenyl)porphyrin in Monomer and Aggregation Forms by UV-Vis, 1H NMR, 13C NMR, SEM and Atomic Force Microscopy”, ajc, vol. 22, no. 6, pp. 4398–4404, May 2010.