1. The discovery of S2 in Comet IRAS-Araki-Alcock 1983d;A'Hearn;Astrophys. J.,1983
2. S2: A clue to the origin of cometary ice?;A'Hearn,1985
3. Comet Bowell 1980b;A'Hearn;Astron. J.,1984
4. The abundance of sulphur in comets;Azoulay,1986
5. Retrieving the coma gas expansion velocity in P/Halley, Wilson (1987 VII), and several other comets from the 18-cm OH line shapes;Bockelée-Morvan;Astron. Astrophys.,1990