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Dedicated to Professor Otto Haupt with best wishes on his 100th birthday
Peter Scherk died June 6, 1985.
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Lane, N.D., Scherk, P. & Turgeon, J.M. Independence structures in the geometry of orders. Aeq. Math. 34, 101–105 (1987). https://doi.org/10.1007/BF01840129
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DOI: https://doi.org/10.1007/BF01840129