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<top_article>
 <mrnumber>MR0131659</mrnumber>
 <author>Aizawa, Sadakazu</author>
 <author_utf8>Sadakazu AIZAWA</author_utf8>
 <title>On the characteristic initial value problem for non-linear               wave equations in two space variables</title>
 <journal>Funkcialaj Ekvacioj. Serio Internacia</journal>
 <volume>3</volume>
 <year>1960/1961</year>
 <page>115--146</page>
 <url_pdf>http://fe.math.kobe-u.ac.jp/FE/Free/vol03/fe03-5.pdf</url_pdf>
 <url_infty_pdf>http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE01-10-en_KML/fe03-115-146/fe03-115-146.pdf</url_infty_pdf>
 <mathsci_link> http://www.ams.org/mathscinet-getitem?mr=MR0131659</mathsci_link>
<fesi_info>
  <FILE>fe03-115-146</FILE>
  <YEAR>1961</YEAR>
  <TITLE>On the Characteristic Initial Value Problem for Non-linear Wave Equations in Two Space Variables</TITLE>
  <AUTHOR>AIZAWA, Sadakazu</AUTHOR>
  <AUTHOR_utf8>AIZAWA, Sadakazu</AUTHOR_utf8>
</fesi_info>

<references>
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    <title>Some remarks on the existence and uniqueness of solutions of the hyperbolic equations $s=f(x,y,z,p,q)$</title>
    <journal>Studia Math.</journal>
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    <year>1956</year>
    <page>201-215</page>
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  </article>

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    <title>Sul problema di Darboux per l'equazione $s=f(x,y,z,p,q)$</title>
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    <vol>2</vol>
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  </article>

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    <bibitem>3</bibitem>
    <author>Corduneanu, C.</author>
    <title>L'approximation et la stabilit&#233; des solutions des &#233;quations hyperboliques</title>
    <journal>Com. Acad. R. P. Rom&#238;ne</journal>
    <vol>5</vol>
    <year>1955</year>
    <page>21-26</page>
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    <score>100</score>
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  </article>

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    <author>Corduneanu, C.</author>
    <title>La d&#233;pendance des solutions des &#233;quations hyperboliques par rapport aux coefficients et aux donn&#233;es sur les caract&#233;ristiques</title>
    <journal>Revue de Math.</journal>
    <vol>1</vol>
    <year>1956</year>
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  </article>

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    <bibitem>5</bibitem>
    <author>Diaz, J. B.</author>
    <title>On an analogue of the Euler-Cauchy polygon method for the numerical solution of $u_{xy}=f(x,y,u, u_x,u_y)$</title>
    <journal>Arch. Rational Mechanics and Analysis</journal>
    <vol>1</vol>
    <year>1958</year>
    <page>357-390</page>
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  </article>

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    <bibitem>6</bibitem>
    <author>Foias, C.</author>
    <title>Une condition d'unicit&#233; pour l'&#233;quation $s=f(x,y,z)$</title>
    <journal>Com. Acad. R. P. Rom&#238;ne</journal>
    <vol>4</vol>
    <year>1954</year>
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    <author>Foias, C.; Gussi, G.; Poenaru, V.</author>
    <title>Une m&#233;thode directe dans l'&#233;tude du probl&#232;me de Cauchy pour les &#233;quations aux d&#233;riv&#233;es partielles, hyperboliques, du second ordre</title>
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  </article>

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    <author>Hartman, P.; Wintner, A.</author>
    <title>On hyperbolic partial differential equations</title>
    <journal>Amer. Journ. Math.</journal>
    <vol>74</vol>
    <year>1952</year>
    <page>834-864</page>
    <mr>MR0051413</mr>
    <score>100</score>
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  </article>

  <article>
    <bibitem>9</bibitem>
    <author>Hukuhara, M.</author>
    <title>Le probl&#232;me de Darboux pour l'&#233;quation  $s=f(x,y,z,p,q)$</title>
    <journal>Ann. Mat. Pura Appl.</journal>
    <vol>51</vol>
    <year>1960</year>
    <page>39-54</page>
    <mr>MR0124619</mr>
    <score>85</score>
    <query_string>Cache/Hu/Hukuhara,s=f(x,y,z,p,q),Ann*,1960,1961</query_string>
  </article>

  <book>
    <bibitem>10</bibitem>
    <author>Hukuhara, M.; Sat&#333;, T.</author>
    <booktitle>Theory of differential equations</booktitle>
    <publisher>Tokyo, Kyoritsu Shuppan K. K.</publisher>
    <year>1957 (in Japanese) </year>
    <mr>MR0143970</mr>
    <not_found>Data is not found in MathSci.</not_found>
    <query_string>Cache/Hu/Hukuhara,Theory,Tokyo,*,1957,1958</query_string>
  </book>

  <article>
    <bibitem>11</bibitem>
    <author>Keller, J. B.</author>
    <title>On solutions of nonlinear wave equations</title>
    <journal>Comm. Pure Appl. Math.</journal>
    <vol>10</vol>
    <year>1957</year>
    <page>523-530</page>
    <mr>MR0096889</mr>
    <score>100</score>
    <query_string>Cache/Ke/Keller,solutions,Comm*,1957,1958</query_string>
  </article>

  <article>
    <bibitem>12</bibitem>
    <author>Kisy&#324;ski, J.</author>
    <title>Sur l'existence et l'unicit&#233; des solutions des probl&#232;mes classiques relatifs &#224; l'&#233;quation $s=F(x, y, z, p, q)$</title>
    <journal>Ann. Univ. Mariae Curie-Sklodowska A</journal>
    <ser>A</ser>
    <vol>11</vol>
    <year>1957</year>
    <page>73-108</page>
    <mr>MR0107091</mr>
    <score>92</score>
    <query_string>Cache/Ki/Kisy\'nski,l'existence,Ann*,1957,1958</query_string>
  </article>

  <other>
    <bibitem>13</bibitem>
    <raw_data>Leeney, P., On the existence of not necessarily unique solutions of the classical hyperbolic boundary value problem for non-linear second order partial differential equations in two independent variables, Ph. D. thesis, Brown Univ., (1950)</raw_data>
    <not_found>Data is not found in MathSci.</not_found>
    <query_string>Cache/Le/Leeney,necessarily,Ph*,1950,1951</query_string>
  </other>

  <book>
    <bibitem>14</bibitem>
    <author>Petrovsky, I. G.</author>
    <booktitle>Lectures on partial differential equations</booktitle>
    <publisher>Interscience Publishers, INC., New York</publisher>
    <year>1954</year>
    <mr>MR0065760</mr>
    <query_string>Cache/Pe/Petrovsky,Lectures,Interscience*,1954,1955</query_string>
  </book>

  <article>
    <bibitem>15</bibitem>
    <author>Riesz, M.</author>
    <title>L'int&#233;grale de Riemann-Liouville et le probl&#232;me de Cauchy</title>
    <journal>Acta Math.</journal>
    <vol>81</vol>
    <year>1949</year>
    <page>1-223</page>
    <mr>MR0030102</mr>
    <score>100</score>
    <query_string>Cache/Ri/Riesz,Riemann-Liouville,Acta*,1949,1950</query_string>
  </article>

  <article>
    <bibitem>16</bibitem>
    <author>Santoro, P.</author>
    <title>Sul problema di Darboux per l'equazione $s=f(x,y,z,p,q)$  e il fenomeno di Peano</title>
    <journal>Rend. dell'Accademia Nazionale dei XL, IV</journal>
    <year>1959</year>
<vol>10</vol>
    <page>3-17</page>
    <mr>MR0126042</mr>
    <score>91</score>
    <query_string>Cache/Sa/Santoro,s=f(x,y,z,p,q),Rend*,1959,1960</query_string>
  </article>

  <article>
    <bibitem>17</bibitem>
    <author>Sat&#333;, T.</author>
    <title>Sur l'&#233;quation aux d&#233;riv&#233;es partielles hyperboliques $s=f(x,y,z,p,q)$</title>
    <journal>Mem. Fac. Sci., Kyushu Imp. Univ., A</journal>
    <vol>2</vol>
    <year>1941</year>
    <page>107-123</page>
    <mr>MR0005241</mr>
    <query_string>Cache/Sa/Sat\bar,s=f(x,y,z,p,q),Mem*,1941,1942</query_string>
  </article>

  <article>
    <bibitem>18</bibitem>
    <author>Sat&#333;, T.</author>
    <title>On hyperbolic partial differential equations</title>
    <journal>Kyudai Rigakubu Kenkyu Hokoku</journal>
    <vol>1</vol>
    <year>1945</year>
    <page>203-249</page>
    <not_found>Data is not found in MathSci.</not_found>
    <query_string>Cache/Sa/Sat\bar,hyperbolic,Kyudai*,1945,1946</query_string>
  </article>

  <article>
    <bibitem>19</bibitem>
    <author>Schaefer, H.</author>
    <title>Eine Bemerkung &#252;ber hyperbolische System partieller Differentialgleichungen zweiter Ordnung</title>
    <journal>Jber. Deutsc. Math. Verein.</journal>
    <vol>58</vol>
    <year>1955</year>
    <page>39-42</page>
    <mr>MR0074655</mr>
    <score>88</score>
    <query_string>Cache/Sc/Schaefer,Differentialgleichungen,Jber*,1955,1956</query_string>
  </article>

  <article>
    <bibitem>20</bibitem>
    <author>Vasilach, S.</author>
    <title>Un nouveau probl&#232;me aux limites pour les &#233;quations &#224; d&#233;riv&#233;es partielles de type hyperbolique</title>
    <journal>Com. Acad. R. P. Rom&#238;ne</journal>
    <vol>1</vol>
    <year>1951</year>
    <page>35-39</page>
    <mr>MR0071636</mr>
    <query_string>Cache/Va/Vasilach,nouveau,Com*,1951,1952</query_string>
  </article>

  <article>
    <bibitem>21</bibitem>
    <author>Walter, W.</author>
    <title>&#220;ber die Differentialgleichung $u_{xy}=f(x,y,u,u_x,u_y)$</title>
    <journal>Math. Zeitschr.</journal>
<vol>71</vol>
    <mr>MR0132299</mr>
    <year>1959</year>
    <page>308-324</page>
  </article>

  <article>
    <bibitem>21</bibitem>
    <author>Walter, W.</author>
    <title>&#220;ber die Differentialgleichung $u_{xy}=f(x,y,u,u_x,u_y)$, II</title>
    <journal>Math. Zeitschr.</journal>
<vol>71</vol>
    <mr>MR0123829</mr>
    <year>1959</year>
    <page>436-453</page>
  </article>

  <article>
    <bibitem>21</bibitem>
    <author>Walter, W.</author>
    <title>&#220;ber die Differentialgleichung $u_{xy}=f(x,y,u,u_x,u_y)$, III</title>
    <journal>Math. Zeitschr.</journal>
<vol>73</vol>
    <mr>MR0123830</mr>
    <year>1960</year>
    <page>268-279</page>
  </article>

</references>
</top_article>
