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Editorial

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BISE’s Responsibility for our Planet
Hans Ulrich Buhl and Martin Jetter

Research Papers

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Simulating Discount-Pricing Strategies for the GSM-Mobile Market
Sven Schade, Thorsten Frey, and Nezar Mahmoud

State of the Art

Catchword

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Unified Communications
Kai Riemer and Stefan Taing

Discussion

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Accreditation of Study Programs in Business and Information Systems Engineering: Towards more Competitiveness or Towards more Bureaucracy?
Robert Winter, Elmar J. Sinz, Karl Kurbel, Thomas Dyllick, Heinz-Ulrich Schmidt, and Torsten Eymann