^Levy, M.; Newman, Melvin S.; Szwarc, M. Methyl Affinities of Non-planar Aromatic Hydrocarbons. Journal of the American Chemical Society. 1955-08, 77 (16): 4225–4225. doi:10.1021/ja01621a015.
^Tolosa, Imma; de Mora, Stephen; Sheikholeslami, Mohammad Reza; Villeneuve, Jean-Pierre; Bartocci, Jean; Cattini, Chantal. Aliphatic and aromatic hydrocarbons in coastal caspian Sea sediments. Marine Pollution Bulletin. 2004-01-01, 48 (1–2): 44–60. PMID 14725875. doi:10.1016/S0025-326X(03)00255-8.
^Hirshfeld, F. L.; Sandler, Selina; Schmidt, G. M. J. 398. The structure of overcrowded aromatic compounds. Part VI. The crystal structure of benzo[c]phenanthrene and of 1,12-dimethylbenzo[c]phenanthrene. Journal of the Chemical Society (Resumed). 1963: 2108. doi:10.1039/JR9630002108.