Vanriet, R., & Steenbeckeliers, G. (1984). [Contribution To the Study of Rotational Spectrum of the Molecule (soo)-s-32-o-18-o-18]. Societe Scientifique de Bruxelles. Annales. Sciences Mathematiques, Astronomiques et Physiques, 97(4), 243-258. https://hdl.handle.net/2078.5/42256 (Original work published 1984)