1. and (1963). ‘Manufacture of tonnage hydrogen by partial combustion—the Texaco process’, Sixth World Petroleum Congress, Frankfurt, Germany, June.
2. (1974). ‘Texaco heavy oil gasification’, The University of Pittsburgh School of Engineering Symposium on Coal Gasification and Liquifaction, Pittsburgh, Penn. August 6-8.
3. and (1978). ‘Gasification of coal liquifaction residues’, The 13th Intersociety Energy Conversion Engineering Conference, San Diego, California, August.
4. and . (1971). ‘A new catalyst for the CO shift conversion of sulfur-containing gases’, 68th National Meeting of the AIChE, Houston, Texas, February 28-March 4.
5. and . (1979). ‘Coal gasification for production of hydrogen’, American Chemical Society and Chemical Society of Japan Chemical Congress, Honolulu, Hawaii, April 1-6.