1. M. I. Balabushevich, L. I. Erokhino, and L. A. Kazarinova, Parikla. Biokhim. Mikrobiol.,19, No. 6, 720–727 (1831).
2. I. Ya. Bershtein and Yu. L. Kaminskii, Spectrophotometric Analysis in Organic Chemistry [in Russian], Leningrad (1975).
3. A. A. Nudler and L. I. Erokhina, Genetika,12, No. 7, 89–99 (1976).
4. N. a. Nudler, N. V. Matveichuk, and L. I. Erokhina, USSR Inventor's Certificate No. 515783; Otkrytiya, No. 20 (1976).
5. A. A. Prozorov, N. I. Khdanova, and G. A. Velikzhanina, USSR Inventor's Certificate No. 480758; Otrytiya, No. 30 (1975).