Preparation and electrical properties of composites based on (Cu6PS5I)1-x(Cu7PS6)x mixed crystals - Yu. Izai; M. M. Luchynets; I. P. Studenyak; A. I. Pogodin; O. P. Kokhan; M. Rajnak; M. Timko; P. Kopčanský (Semiconductor Physics, Quantum Electronics and Optoelectronics, 2019)