M. Kerzhentsev, E. V. Matus, I. Z. Ismagilov, O. B. Sukhova, P. Bharali, and Z. R. Ismagilov, “Control of Ni/Ce1-xMxOy catalyst properties via the selection of dopant M = Gd, La, Mg Part 1. Physicochemical characteristics”, Eurasian Chem.-Technol. J., vol. 20, no. 4, pp. 283–291, Dec. 2018.