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4. Yu. G. Egizarov, M. F. Savchits, and E. Ya. Ustilovskaya, Heterogeneous Catalytic Isomerization of Hydrocarbons (Nauka i Tekhnika, Minsk, 1989) [in Russian].
5. K. V. Topchieva and Ho Shi Thoang, Activity and Physicochemical Characteristics of High-Silica Zeolites and Zeolite-Based Catalysts (Mosk. Gos. Univ., Moscow, 1976) [in Russian].