1. Metal Forming: Fundamentals and Applications;Altan,1983
2. Fundamentals of programmed forging;Pahnke;Metall. Plant Technol.,1983
3. Behavior of internal hollows in forgings during open-die forging;Kopp;Stahl Eisen,1976
4. Shaping conditions and design of the tools for free shaping;Vater;Stahl Eisen,1971
5. Influence of forging scheme on deformation of central layers of bloom;Belova;Steel USSR,1982