Properties of the transient X-ray pulsar Swift J1816.7–1613 and its optical companionArmin Nabizadeh, Sergey S. Tsygankov, Dmitrij I. Karasev, Juhani Mönkkönen, Alexander A. Lutovinov, Dmitrij I. Nagirner and Juri PoutanenA&A, 622 (2019) A198DOI: https://doi.org/10.1051/0004-6361/201834635