Geodesic
Estimates of the spectrum of some differential operators
Matematičeskie zametki, Tome 61 (1997) no. 4, pp. 634-636.

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

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O. G. Parfenov. Estimates of the spectrum of some differential operators. Matematičeskie zametki, Tome 61 (1997) no. 4, pp. 634-636. http://geodesic.mathdoc.fr/item/MZM_1997_61_4_a15/

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