Geodesic
Approximation of isolated eigenvalues of ordinary differential operators.
Journal für die reine und angewandte Mathematik, Tome 445 (1993), pp. 31-44.

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Mots-clés : singular Sturm-Liouville or Dirac differential expression, essential spectrum, numerical calculation of eigenvalues of singular differential operators, approximating operators 
@article{JRAM_1993__445_153576,
     author = {G\"unter Stolz and Joachim Weidmann},
     title = {Approximation of isolated eigenvalues of ordinary differential operators.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {31--44},
     publisher = {mathdoc},
     volume = {445},
     year = {1993},
     zbl = {0781.34052},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1993__445_153576/}
}
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Günter Stolz; Joachim Weidmann. Approximation of isolated eigenvalues of ordinary differential operators.. Journal für die reine und angewandte Mathematik, Tome 445 (1993), pp. 31-44. http://geodesic.mathdoc.fr/item/JRAM_1993__445_153576/