Tek Prasad Adhikari (CAMK, Warsaw)
based on C. V. Silva et al. A&A, 2016
Andrzej Zdziarski (CAMK, Warsaw)
partly based on Plotkin et al. ApJ 834 (2017)
Justyna Średzińska (CAMK, Warsaw)
Wenchi Yan (CAMK, Warsaw)
based on Roberts et al. MNRAS (2017)