I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors - I. G. Vertegel; E. D. Chesnokov; O. I. Ovcharenko; L. S. Ivanova; Yu. P. Gnatenko; I. I. Vertegel (Semiconductor Physics, Quantum Electronics and Optoelectronics, 2017)