1. Topsøe H, Clausen BS, Massoth FE (1996) Catal Sci Tech 11:1
2. Whitehurst DD, Isoda T, Mochida I (1998) Adv Catal 4:345
3. Sugioka M (1966) PETROTECH 19:458
4. Kabe T, Ishihara A, Qian W (1999) Hydrodesulfurization and hydrodenitrogenation. Kodansha Scientific, Wiley-VCH, Tokyo, New York, Berlin
5. Okamoto Y (2003) J Jpn Petrol Inst 43:343