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by:
Schubert, Frank, 1938-
Published in: Wissenschaftliche Zeitschrift der Humboldt-Universität zu Berlin / Reihe Mathematik, Naturwissenschaften (1989)
Published in: Wissenschaftliche Zeitschrift der Humboldt-Universität zu Berlin / Reihe Mathematik, Naturwissenschaften (1989)
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Other Authors:
“...Schubert, Frank...”
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