Energetic radiation and the sulfur chemistry of protostellar envelopes: submillimeter interferometry of AFGL 2591A. O. Benz, P. Stäuber, T. L. Bourke, F. F. S. van der Tak, E. F. van Dishoeck and J. K. JørgensenA&A, 475 2 (2007) 549-558DOI: https://doi.org/10.1051/0004-6361:20078032