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<Paper uid="E93-1029">
  <Title>Mathematical Aspects of Command Relations</Title>
  <Section position="6" start_page="248" end_page="248" type="ackno">
    <SectionTitle>
Acknowledgements
</SectionTitle>
    <Paragraph position="0"> I wish to thank A. and J. for their moral support and F. Wolter for helpful discussions.</Paragraph>
  </Section>
class="xml-element"></Paper>