C. Henkel, P. Schilke, and R. Mauersberger,
Molecules in external galaxies - The detection of CN, C<sub>2</sub>H, and HNC, and the tentative detection of HC<sub>3</sub>N,
Astron. Astrophys. 201, L23-L26 (1988).
Source(s): NGC253, IC342, M82
Facility: IRAM 30m
Contributor(s): S. Thorwirth; 09/2005