Yuhai Zhang, Haixia Su, Lei Shang [...]
Raul Neghina, Adriana Maria Neghina
T. Atsumi, A. Sagawa, S. Jodo [...]
Giuseppina Marino Marsilia, Anna La Mura, Roberta Galdiero [...]
Valeri Velev, Metodi Popov, Latchezar Tomov [...]
I. Tritou, P. Prassopoulos, M. Daskalogiannaki [...]
T. Morita, Y. Mizutani, Y. Michimae [...]
Mehmet Beyazal
Yuan Yang, Ling-Hao Zhao, Si-Yuan Fu [...]
Tong-Yin Zhu, Guan-Hui Zhou, Xin-Hua Chen [...]
, Metodi Popov, Latchezar Tomov , Guan-Hui Zhou, Xin-Hua Chen 
