2. Constituents of high-boiling petroleum distillates. Part XI. Methyl homologues of chrysene and 11-thiabenzo[a]fluorene in a Kuwait oil W. Carruthers,H. N. M. Stewart J. Chem. Soc. C 1967 560
3. 104. The relative reactivity of aromatic double bonds G. M. Badger J. Chem. Soc. 1949 456