On commuting selfadjoint extensions of differential operators
Sbornik. Mathematics, Tome 13 (1971) no. 3, pp. 360-369 Cet article a éte moissonné depuis la source Math-Net.Ru

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We describe the domains in which the operators of the Dirichlet problem of two differential expressions spectrally commute. Bibliography: 7 titles.
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R. Denchev. On commuting selfadjoint extensions of differential operators. Sbornik. Mathematics, Tome 13 (1971) no. 3, pp. 360-369. http://geodesic.mathdoc.fr/item/SM_1971_13_3_a2/

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