1. Professor and Honorary President of the International Federation for Structural Concrete, Dept. of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest Univ. of Technology and Economics, Műegytem rkp. 1-3, 1111 Budapest, Hungary.
2. Professor Assistant, Dept. of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest Univ. of Technology and Economics, Műegytem rkp. 1-3, 1111 Budapest, Hungary (corresponding author).
3. Executive Expert, Dept. of Radiology, Univ. of Pécs, Ifjúság út 13, 7624 Pécs, Hungary.