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      <record key="001" att1="001" value="LIB90497540X" att2="LIB90497540X">001   LIB90497540X</record>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Zeitschrift</field>
      <field key="076" subkey="">Ökonomie</field>
      <field key="100" subkey="">merkies, a.h.q.m.</field>
      <field key="104" subkey="a">van der meer, t.</field>
      <field key="331" subkey="">a theoretical foundation for constant market share analysis</field>
      <field key="542" subkey="">0377-7332</field>
      <field key="544" subkey="n">EE13.1988(2);1</field>
      <field key="590" subkey="">empirical economics, a quarterly journal of the institute for advanced studies, vienna, austria</field>
      <field key="596" subkey="a">13.1988, issue 2, 65 - 80</field>
    </SEQUENTIAL>
  </section>