A. M. Varvarin, S. V. Prudius, O. Y. Zinchenko, S. I. Levytska, I. V. Shchutskyi, and V. V. Brei, “Conversion of ethanol to n-butanol over copper-containing catalysts with separating product mixture”, CPJ, no. 36, pp. 76-85, Dec. 2025.