L. J. Rickard, P. Palmer, M. Morris, B. E. Turner, and B. Zuckerman,
Detection of extragalactic carbon monoxide at millimeter wavelengths,
Astrophys. J. 199, L75-L78 (1974).
Source(s): M82, NGC253
Facility: NRAO 11m
P. M. Solomon and R. de Zafra
Carbon monoxide in external galaxies,
Astrophys. J. 199, L79-L83 (1974).
Source(s): M82
Facility: NRAO 11m
L. J. Sage, C. Henkel, and R. Mauersberger,
Extragalactic O-18/O-17 ratios and star formation - High-mass stars preferred in starburst systems?,
Astron. Astrophys. 249, 31-35 (1991).
Source(s): M82, NGC253, tentatively: IC 342
Facility: IRAM 30m, NRAO 12m
Contributor(s): S. Thorwirth, 09/2005