1. Predicted presence and tentative identification of new molecules in the pure S star R CYG;Sauval;Astron Astrophys.,1978
2. The keenan and wing bands in S stars;Lambert;R Astr. Soc.,1980
3. Transition metal sulfur chemistry, biological and industrial significance;Stielfel;Am. Chem. Soc.,1996
4. Zirconium sulphide in S stars;Hinkle;Mon. Not. R Astr. Soc.,1989
5. Bands in the photographic infra-red spectra of S-type stars;Keenan;Astrophys. J.,1950