1. STRECON® Technology, Danfoss A/S, publication TB.10.A2.02
2. STRECON® Technology, Danfoss A/S, publication NC.13.A2.02
3. T. Birker, J. Groenbaek, High-stiffness stripwound containers, WIRE 1/98, 1998, pp. 37–42
4. T. Birker, T.Ø. Pedersen, Studies of contact problems and cyclic plasticity in high-pressure tools by use of non-linear analysis, in: Proceedings of the 8th ANSYS Conference, Pittsburgh, USA, Aug. 17–19, 1998, vol. 1, 1998, pp. 101–110
5. F. Schmieder, Beitrag zur Fertigung von schrägverzahnten Stirnrädern durch Querflieβpressen (in German), Springer, Berlin, 1998