The evolution of young HII regions - I. Continuum emission and internal dynamicsP. D. Klaassen, K. G. Johnston, J. S. Urquhart, J. C. Mottram, T. Peters, R. Kuiper, H. Beuther, F.F.S. van der Tak and C. GoddiA&A, 611 (2018) A99DOI: https://doi.org/10.1051/0004-6361/201731727