1. Modeling of two-phase natural circulation in a WWER-plant: PMK experimental results;Bandurski,1989
2. Experimentelle verifikation des passiven Wärmetransports von Reaktorkern an die Dampferzeuger des DWR in Störfallsituationen;Brand,1991
3. Telex message from Staatliches Amt für Atomsicherheit and Strahlenschutz (SAAS) to IAEA Division of Nuclear Safety;Bruno,1990
4. Commission of Experts, Report on investigation of the incident on December 7, 1975,1976
5. Degradation of natural circulation -Kozloduy NPP, unit 1;Ganchev,1994