Johannessen A, Helvik A-S, Engedal K, Ulstein I, S?rlie V
Kadircan H. Keskinbora
Jing Tang, Yue Liang, Gende Li, Weifeng Shi and Cheng Gui
N. Pothanna, N. Ch. Pattabhi Ramacharyulu and P. Nageswararao
Fatmanur Tugcu-Demiroz
Liang Fu, Shengzhong Dong, Shiyang Liu and Fangxu Xu