HDO and SO2 thermal mapping on Venus: evidence for strong SO2 variabilityT. Encrenaz, T. K. Greathouse, H. Roe, M. Richter, J. Lacy, B. Bézard, T. Fouchet and T. WidemannA&A, 543 (2012) A153DOI: https://doi.org/10.1051/0004-6361/201219419