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      <record key="001" att1="001" value="LIB908910307" att2="LIB908910307">001   LIB908910307</record>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Buch</field>
      <field key="076" subkey="">Ökonomie</field>
      <field key="100" subkey="">Tu, Pierre N.V.</field>
      <field key="331" subkey="">Dynamical Systems</field>
      <field key="335" subkey="">An Introduction with Applications in Economics and Biology</field>
      <field key="403" subkey="">2. Ed., Rev. and Enlarged</field>
      <field key="410" subkey="">Berlin, Heidelberg, New York</field>
      <field key="412" subkey="">Springer-Verlag</field>
      <field key="425" subkey="">1994</field>
      <field key="433" subkey="">xviii, 314 pp., 105 Figures</field>
      <field key="517" subkey="c">from the Table of Contents: Introduction; Review of Ordinary Differential Equations; Review of Difference Equations; Review of</field>
      <field key="Som" subkey="e">Linear Algebra; First Order Differential Equations Systems; First Order Difference Equations Systems; Nonlinear Systems;</field>
      <field key="Gra" subkey="d">ient Systems, Lagrangean and Hamiltonian Systems; Simplifying Dynamical Systems; Bifurcation, Chaos and Catastrophes in</field>
      <field key="Dyn" subkey="a">mical Systems; Optimal Dynamical Systems; Some Applications in Economics and Biology;</field>
      <field key="540" subkey="">3-540-57661-4</field>
      <field key="544" subkey="">14569-A</field>
    </SEQUENTIAL>
  </section>