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2. Nickel-on-Kieselguhr: A Technical Specification TU 38.101396-89E.
3. Technological Guide of Workshop No. 1507 OAO NKNKh.
4. O. A. Ptitsyna, N. V. Kupletskaya, V. K. Timofeeva, et al., Laboratory Works on Organic Synthesis: A Manual for Chemical and Biological Specialties of Pedagogical Institutes (Prosveshchenie, Moscow, 1979) [in Russian].
5. R. Hughes, Deactivation of Catalyst (Academic Press, London, 1984; Khimiya, Moscow, 1989).