by Frevert, Ronny | Haase, Joachim | Jancke, Roland | Knochel, Uwe and.
by Smolskiy, Sergey M | Osin, Andrey V | Sheluhin, Oleg I.
by Guizani, Mohsen.
by Srikant, R | Ying, Lei.
by Antoniou, Josephina | Pitsillides, Andreas.
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