1. Series of International Conferences have been running for more than three decades, at roughly one per year rate: “International Gas Research Conferences”, org.: Gas Technology Institute, Des Plaines IL, USA; “Plastics Pipes”, org.: Institute of Materials, London, UK; “Plastic Pipe Fuel Gas Symposia”, org: Plastics Pipe Institute, Washington D.C., USA; “Plastic Fuel Gas Pipe Symposium”, org.: American Gas Association, Washington D.C., USA.
2. Friedrich, K. (1983) Crazes and shear bands in semi-crystalline thermoplastics, Adv. Polym. Sci. 52/53, 225-227.