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by Stephan Dempe; Alain Zemkoho
by Dempe, Stephan; Kalashnikov, Vyacheslav; Pérez-valdés, Gerardo A.; et al.
by Stephan Dempe; Vyacheslav Kalashnikov; Gerardo A. Pérez-Valdés; et al.
by Dempe, Stephan
by Dempe, Stephan; Kalashnikov, Vyacheslav
by Dempe, Stephan; Schreier, Heiner
by Unger, Thomas; Dempe, Stephan