1. Department of Civil Engineering, University North, Jurja Križanića 31b, 42000 Varazdin, Croatia
2. Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varazdin, Croatia
3. Faculty of Civil Engineering, Architecture, and Geodesy, University of Split, Matice Hrvatske 15, 21000 Split, Croatia
4. Department of Civil and Mechanical Engineering (DICEM), University of Cassino and Southern Lazio, Via Di Biasio, 43, Cassino, 03043 Frosinone, Italy