Ammonia (J,K)=(1,1) to (4,4) and (6,6) inversion lines detected in the Seyfert 2 galaxy NGC 1068 Y. Ao, C. Henkel, J. A. Braatz, A. Weiß, K. M. Menten and S. Mühle A&A, 529 (2011) A154 Published online: 22 April 2011 DOI: 10.1051/0004-6361/201116595