1. Determination of sulfur heterocycles in coal liquids and shale oils
2. For a compilation of recent work, see P. W.Jones and P.Leber, eds., “Polynuclear Aromatic Hydrocarbons”, Ann Arbor Science, Ann Arbor, MI, 1979;
3. (b) “Polynuclear Aromatic Hydrocarbons”, H. V.Gelbin and P. O. P.Ts'O, eds., Academic Press, New York, San Francisco, London, 1978.
4. R. Dagani, Chem. Eng. News, March 9, p. 26 (1981).
5. Synthesis of phenanthro[b]thiophenes