1. N. Nizamov, A.S. Prishchepov, and K.U. Umarov, in: Advances in Chemistry and Technology of Staining and Dye Synthesis [in Russian], Ivanovo (1985), pp. 45–48.
2. A. S. Prishchepov, Prib. Tekh. Eksp., Issue6, 134–136 (1982).
3. A. S. Prishchepov, Zh. Prikl. Spektrosk.,36, 82–86 (1982).
4. A. S. Prishchepov and N. Nizamov, Opt. Spektrosk.,59, 1361–1363 (1985).
5. A. S. Prishchepov and N. Nizamov, Khim. Fiz.,5, 635–642 (1986).