Study of combined THGEM/GAPD-matrix multiplier in a two-phase Cryogenic Avalanche Detector in ArA. Bondar, A. Buzulutskov, A. Dolgov, E. Shemyakina and A. SokolovEPJ Web Conf., 174 (2018) 02005DOI: https://doi.org/10.1051/epjconf/201817402005