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2. Beck, S. C., Serabyn, E., Lacy, J. H., Geballe, T. R., and Smith, H. A.: 1980, paper presented at IAU Symposium #96 on Infrared Astronomy. Beckwith, S.: 1979, IAU Symposium #87 on Interstellar Molecules.
3. Beckwith, S. and DeNoyer, L. K.: 1981, in preparation.
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5. Beckwith, S., Persson, S. E., and Gatley, I.: 1978, Ap. J. (Letters) 219, L33.