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by Claudia Eckert
by Eckert, Claudia; Katsikas, Sokratis K.; Pernul, Günther
by Eckert, Claudia
by Krcmar, Helmut; Eckert, Claudia; Rossnagel, Alexander; et al.
by Schaefer, Dirk; Coates, Graham; Eckert, Claudia
by Clarkson, John; ECKERT, CLAUDIA
by John Clarkson; ?Claudia Eckert