1. Gas-flame cutting of metal. Available from: http://termokapital.ru/additional/gas-flame-cutting-of-metal.
2. Laser cutting. Available from: http://www.osvarke.com/lazernayarezka.html.
3. Flame cutting. Treatment of metals portal. Available from: http://ostmetal.into/raz.rezaya-ognem.
4. Waterjet cutting technology. Available from: http://www.steelmetall.ru.
5. Waterjet cutting. Available from: http://ti.uz/production/gidroabrazivnaya-rezka.