A. Berdyugin, V. Piirola, S. Sadegi, S. Tsygankov, T. Sakanoi, M. Kagitani, M. Yoneda, S. Okano and J. Poutanen
A&A, 591 (2016) A92
Published online: 21 June 2016
DOI: 10.1051/0004-6361/201528020
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