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Telemedizin : Markt, Strategien, Unternehmensbewertung
Häcker, Joachim, (2008)
The payment system : design, management and supervision
Summers, Bruce J., (1994)
PC-based Automated Clearing House origination : dinosaur or niche application?
Rettinger, Gregory, (2010)
Surviving the global financial crisis by adopting a unified payments hub approach
Desai, Parth, (2009)