1. ICRANet, Piazza della Repubblica 10, I–65122 Pescara, Italy
2. Dipartimento di Fisica and ICRA, Sapienza Università di Roma, P.le Aldo Moro 5, I–00185 Rome, Italy
3. NNLOT, al-Farabi Kazakh National University, Al-Farabi av. 71, 050040 Almaty, Kazakhstan
4. Department of Physics, Nazarbayev University, Kabanbay Batyr 53, 010000 Astana, Kazakhstan
5. ICRANet-Rio, CBPF, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ, 22290–180, Brazil