Chemistry in disks - VIII. The CS molecule as an analytic tracer of turbulence in disks S. Guilloteau, A. Dutrey, V. Wakelam, F. Hersant, D. Semenov, E. Chapillon, T. Henning and V. Piétu A&A, 548 (2012) A70 Published online: 23 November 2012 DOI: 10.1051/0004-6361/201220331