1. PE 100 Pipe Systems;Brömstrup,2004
2. Plastics Pipes for Water Supply and Sewage Disposal;Janson,1999
3. G. Brescia, Proceedings of Plastics Pipes XIV, Budapest, Hungary (2008).
4. DIN EN ISO 9080, Plastics piping and ducting systems - Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation, 2003.