1. Ainsworth, R. A. (1982) Some Observations on Creep Crack Growth Inter. Jour. of Fract., 18, 147–159.
2. Blum, R. (1988) Remanent Life Assessment in Danish Power Stations Conf. on Life assessment and Extension. June 13–15, The Hague, III, 48–54.
3. Analysis of Creep in a Welded P91 Pressure Vessel International;Eggeler;Jour. Pres. Vessel & Piping,1994
4. Applications and Properties of Modified 9Cr-1Mo Steel Tubes and Pipes for Fossil-Fired Power Plants;Iseda;The Sumitomo Research,1988
5. Kjær, S. (1990) Kohlenstaubbefeuerte Kraftwerksblöcke mit Fortgeschrittenem Wasser/Dampfprozess VGB Kraftverkstechnik 70 H.3, 201–208.