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<top_article>
 <mrnumber>MR0311874</mrnumber>
 <author>Egawa, Jir{\=o}</author>
 <author_utf8>Jir&#333; EGAWA</author_utf8>
 <title>Invariant positive measures for flows in the plane</title>
 <journal>Funkcialaj Ekvacioj. Serio Internacia</journal>
 <volume>15</volume>
 <year>1972</year>
 <page>23--38</page>
 <url_pdf>http://fe.math.kobe-u.ac.jp/FE/Free/vol15/fe15-4.pdf</url_pdf>
 <url_infty_pdf>http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe15-023-038/fe15-023-038.pdf</url_infty_pdf>
 <mathsci_link> http://www.ams.org/mathscinet-getitem?mr=MR0311874</mathsci_link>
<fesi_info>
  <FILE>fe15-023-038</FILE>
  <YEAR>1972</YEAR>
  <TITLE>Invariant Positive Measures for Flows in the Plane</TITLE>
  <AUTHOR>EGAWA, Jir\bar{o}</AUTHOR>
  <AUTHOR_utf8>EGAWA, Jir\bar{o}</AUTHOR_utf8>
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<references>
  <article>
    <bibitem>1</bibitem>
    <author>Egawa, J.</author>
    <title>Global Parallelizability of Local Dynamical Systems</title>
    <journal>Math. Syst. Theory</journal>
    <vol>6</vol>
    <num>2</num>
    <year>1972</year>
    <page>133-144</page>
    <mr>MR0307213</mr>
    <score>100</score>
    <query_string>Cache/Eg/Egawa,Parallelizability,Math*,1972,1973</query_string>
  </article>

  <article>
    <bibitem>2</bibitem>
    <author>McCann, Roger C.</author>
    <title>A Classification of Centers</title>
    <journal>Pacific J. Math.</journal>
    <vol>30</vol>
    <year>1969</year>
    <page>733-746</page>
    <mr>MR0259288</mr>
    <query_string>Cache/Mc/McCann,Roger,A*,1969,1970</query_string>
  </article>

  <book>
    <bibitem>3</bibitem>
    <author>Nemytskii, V. V.; Stepanov, V. V.</author>
    <booktitle>Qualitative Theory of Differential Equations</booktitle>
    <publisher>Princeton Univ. Press, Princeton, N. J.</publisher>
    <year>1960</year>
    <mr>MR0121520</mr>
    <score>100</score>
    <query_string>Cache/Ne/Nemytskii,Qualitative,*,1960,1961</query_string>
    <page>viii+523</page>
  </book>

  <article>
    <bibitem>4</bibitem>
    <author>Oxtoby, J. C.</author>
    <title>Stepanoff Flow on the Torus</title>
    <journal>Proc. Amer. Math. Soc.</journal>
    <vol>4</vol>
    <year>1953</year>
    <page>982-987</page>
    <mr>MR0060812</mr>
    <score>80</score>
    <query_string>Cache/Ox/Oxtoby,Stepanoff,Proc*,1953,1954</query_string>
  </article>

  <article>
    <bibitem>5</bibitem>
    <author>Oxtoby, J. C.; Ulam, S. M.</author>
    <title>On the Existence of a Measure Invariant under a Transformation</title>
    <journal>Ann. of Math.</journal>
    <vol>40</vol>
    <year>1939</year>
    <page>560-566</page>
    <mr>MR0000097</mr>
    <score>100</score>
    <query_string>Cache/Ox/Oxtoby,Transformation,Ann*,1939,1940</query_string>
  </article>

  <book>
    <bibitem>6</bibitem>
    <author>H&#225;jek, O.</author>
    <booktitle>Dynamical Systems in the Plane</booktitle>
    <publisher>Academic Press, London and New York</publisher>
    <year>1968</year>
    <mr>MR0240418</mr>
    <score>80</score>
    <query_string>Cache/Ha/H\'ajek,Dynamical,*,1968,1969</query_string>
    <page>viii+235</page>
  </book>

  <article>
    <bibitem>7</bibitem>
    <author>Ura, T.; Hirasawa, Y.</author>
    <title>Sur les Points Singuliers des Equations Diff&#233;rentielles Admettant un Invariant Int&#233;gral</title>
    <journal>Proc. Japan Acad.</journal>
    <vol>30</vol>
    <year>1954</year>
    <page>726-730</page>
    <mr>MR0070795</mr>
    <score>100</score>
    <query_string>Cache/Ur/Ura,Singuliers,Proc*,1954,1955</query_string>
  </article>

  <fearticle>
    <bibitem>8</bibitem>
    <author>Ura, T.</author>
    <title>Isomorphism and Local Characterization of Local Dynamical Systems</title>
    <journal>Funkcial.Ekvac.</journal>
    <vol>12</vol>
    <year>1969</year>
    <page>99-122</page>
    <mr>MR0259886</mr>
<feart>0259886</feart>
    <score>100</score>
    <query_string>Cache/Ur/Ura,Characterization,Funkcial*,1969,1970</query_string>
  </fearticle>

  <article>
    <bibitem>9</bibitem>
    <author>Ura, T.</author>
    <title>Local Dynamical Systems and Their Isomorphisms</title>
    <journal>Proceedings of Japan U. S. Seminar on Ordinary Differential and Functional Equations, Lecture Notes in Mathematics, Vol. 243, Springer Verlag, Berlin, Heidelberg, New York</journal>
    <year>1971</year>
    <page>76-90</page>
    <mr>MR0393683</mr>
    <query_string>Cache/Ur/Ura,Isomorphisms,*,1971,1972</query_string>
  </article>

</references>
</top_article>
