- Bundesanstalt für Materialprüfung (Germany) (3)
- Comité euro-international du béton (2)
- International Association of Testing and Research Laboratories for Materials and Structures (2)
- Plauk, G. (2)
- RILEM-CEB-IABSE-IASS Interassociation Symposium on Concrete Structures Under Impact and Impulsive Loading (2)
- American Concrete Institute (1)
- International Seminar on Concrete for Nuclear Reactors (1)