1. A. Gossauer, Die Chemie der Pyrrole, Berlin (1974).
2. R. A. Jones and G. P. Bean, The Chemistry of Pyrroles. Organic Chemistry, A Series of Monographs, Vol. 34, London (1977).
3. J. M. Patterson, Synthesis, No. 5, 281 (1976).
4. M, Barbier, Introduction to Chemical Ecology [Russian translation], Mir, Moscow (1978).
5. E. I. Mamedov, Author's Abstract of Master's Dissertation, Baku (1974).