1. Ph.D. in Structural Engineering, Dept. of Mechanics, Structures and Environment, Univ. of Cassino, via G. Di Biasio, Cassino (FR) 43, 0343, Italy.
2. Associate Professor in Structural Engineering, Dept. of Mechanics, Structures and Environment, Univ. of Cassino, via G. Di Biasio, Cassino (FR) 43, 0343, Italy (corresponding author).
3. Assistant Professor in Structural Engineering, Dept. of Mechanics, Structures and Environment, Univ. of Cassino, via G. Di Biasio, Cassino (FR) 43, 0343, Italy.