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      <record key="001" att1="001" value="LIB90517270X" att2="LIB90517270X">001   LIB90517270X</record>
      <field key="010" subkey="">LIB905172309</field>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Aufsatz, Sammelband</field>
      <field key="090" subkey="">004</field>
      <field key="100" subkey="">sorensen, d.c.</field>
      <field key="103" subkey="">applied mathematics division, argonne national laboratory, usa</field>
      <field key="331" subkey="">trust region methods for unconstrained minimization</field>
      <field key="544" subkey="n">10094-A;4</field>
      <field key="596" subkey="a">29 - 38</field>
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