References
- Gul' , VE and Akutin , MS . 1985 . Fundamentals of processing of plastics , 399 Moscow : Khimiya .
- Zaitsev , KI . 1988 . Welding of polymer materials , 312 Moscow : Mashinostroenie .
- Volkov , SS . 2001 . Welding and bonding of polymer films, a textbook for higher technical schools , 376 Moscow : Khimiya .
- Volkov , SS and Chernyak , BYa . 1986 . Ultrasound welding of plastics , 254 Moscow : Khimiya .
- Donskoi , AV . 1982 . Ultrasound electrical engineering equipment , 208 Leningrad : Energoizdat .
- Shestel' , LA . 1999 . Equipment for ultrasound welding of components made of polymer films . Svar Proiz , : 37 – 38 .