Study of combined THGEM/GAPD-matrix multiplier in a two-phase Cryogenic Avalanche Detector in Ar A. Bondar, A. Buzulutskov, A. Dolgov, E. Shemyakina and A. Sokolov EPJ Web Conf., 174 (2018) 02005 Published online: 21 February 2018 DOI: 10.1051/epjconf/201817402005