V.I. Mandzyuk
Department of Computer Engineering and Electronics, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
R.P. Lisovskyy
Department of Material Science and Novel Technologies, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
N.I. Nagirna
Department of Material Science and Novel Technologies, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine