The Transitions Involving the Chemistry of C2 and CN in Interstellar Cloud Envelopes Strom, C. J. ; Federman, S. R. ; Lambert, D. L. ; Smith, V. V. ; Cardelli, J. A. ; Joseph, C. L. Abstract Publication: American Astronomical Society Meeting Abstracts #180 Pub Date: May 1992 Bibcode: 1992AAS...180.4304S