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This article was written during the summer of 1988, when the authors were visiting the Johannes-Gutenberg University of Mainz, a visit supported by the DFG as part of the research project “Darstellungstheorie von endlichen Gruppen”. We would like to thank the DFG for its support and the Department of Mathematics at the University of Mainz for the help and hospitality.
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Chillag, D., Herzog, M. On character degrees quotients. Arch. Math 55, 25–29 (1990). https://doi.org/10.1007/BF01199110
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DOI: https://doi.org/10.1007/BF01199110