Shmid, V., A. Podolian, A. Nadtochiy, O. Korotchenkov, B. Romanyuk, V. Melnik, V. Popov, and O. Kosulya. “Photoelectric Properties of SiGe Films Covered With Amorphous- and Polycrystalline-Silicon Layers”. Ukrainian Journal of Physics, vol. 64, no. 5, June 2019, p. 415, doi:10.15407/ujpe64.5.415.