A systematic study of silicate absorption features in heavily obscured AGNs observed by Spitzer/IRST. Tsuchikawa, H. Kaneda, S. Oyabu, T. Kokusho, H. Kobayashi, M. Yamagishi and Y. TobaA&A, 651 (2021) A117DOI: https://doi.org/10.1051/0004-6361/202140483
