Geodesic
Regularized sums of roots of generalized quasipolynomials
Sbornik. Mathematics, Tome 63 (1989) no. 2, pp. 447-455

Voir la notice de l'article provenant de la source Math-Net.Ru

A method is given for obtaining formulas for regularized sums of the eigenvalues of a wide class of boundary value problems generated by ordinary differential expressions with a multiple inclusion of the spectral parameter, in the case of multiple roots of the characteristic equation. Bibliography: 15 titles. 
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     author = {V. A. Lyubishkin},
     title = {Regularized sums of roots of generalized quasipolynomials},
     journal = {Sbornik. Mathematics},
     pages = {447--455},
     publisher = {mathdoc},
     volume = {63},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_63_2_a11/}
}
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V. A. Lyubishkin. Regularized sums of roots of generalized quasipolynomials. Sbornik. Mathematics, Tome 63 (1989) no. 2, pp. 447-455. http://geodesic.mathdoc.fr/item/SM_1989_63_2_a11/