1. CO2 Lasers: Effects and applications;Duley,1976
2. CO2 Lasers: Effects and applications;Duley,1976
3. Laser machining and welding;Rykalin,1978
4. Gas jet laser cutting;Babenko;Sov. J. Quantum Electron.,1973
5. Penetration welding with lasers;Swift-Hook,1973