Accurate ro-vibrational rest frequencies of DC4H at infrared and millimetre wavelengths F. Tamassia, L. Bizzocchi, C. Degli Esposti, L. Dore, M. Di Lauro, L. Fusina, M. Villa and E. Canè A&A, 549 (2013) A38 Published online: 13 December 2012 DOI: 10.1051/0004-6361/201220383