D Schmidt, F Fischer, D Klaiber [...]
Khanh-Hung Nguyen, Jin-Hwe Kweon, Jin-Ho Choi
Ganiy Akhmet, Ye Yu, Ping Hu [...]
H. J. Ma, Y. J. Li, J. N. Li [...]
A. Stern, M. Aizenshtein
Makoto Imanaka, Takafumu Turui, Yojirou Akizuki
Vagif M Mirsalimov
J. D. Liu, T. Jin, N. R. Zhao [...]
J A Verduzco, V H Verduzco, L Dzib-Pérez [...]
K. Bhanumurthy, R. K. Fotedar, D. Joyson [...]
, F Fischer, D Klaiber 
