https://ela.kpi.ua/bitstream/123456789/18351/1/%D0%9A%D0%BE%D1%82%D0%BE%D0%B2%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%9E.%D0%90.,%20%D0%9C%D1%96%D1%80%D0%BE%D1%88%D0%BD%D0%B8%D1%87%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%9E.%D0%AE.,%20%D0%9C%D0%B0%D1%80%D1%87%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%86.%D0%92.%20.pdf