Leon A. Grill
- Strengthening and/or repairing of existing structures. Vorgetragen bei: IABSE Symposium: Strengthening of building structures - Diagnosis and Therapy = Renforcement des structures de bâtiment - Diagnostic et thérapie = Verstärkung von Bauwerken - Diagnose und Behandlung, Venice, Italy, 1983. (1983):
- Precast reinforced concrete planks as structural members. Vorgetragen bei: IABSE Colloquium: Structural Concrete, Stuttgart, Germany, 1991. (1991):
- Repair and/or strengthening in function of the diagnosis on the structural failure. Vorgetragen bei: IABSE Symposium: Extending the Lifespan of Structures, San Francisco, CA, USA, August 1995. (1995):