A. A. Stark and R. S. Wolff,
Some observations of extragalactic HCO+ and HCN,
Astrophys. J. 229, 118-120 (1979).
Facility: Bell Labs 7m
R. Mauersberger and C. Henkel
Dense gas in nearby galaxies. IV - The detection of N2H+, SiO, H13CO+, H13CN, and HN13C,
Astron. Astrophys. 245, 457-466 (1991).
Source(s): NGC253, IC342, and tentatively in M82
Facility: IRAM 30m
Y.-N. Chin, C. Henkel, T. J. Millar, J. B. Whiteoak, and R. Mauersberger, R.
Molecular abundances in the Magellanic Clouds. II. Deuterated species in the LMC,
Astron. Astrophys. 312, L33-L36 (1996).
Facility: SEST 15m