On the negative spectrum of an elliptic operator
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and functional spaces, Tome 192 (1990), pp. 61-67
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@article{TM_1990_192_a5,
author = {Yu. V. Egorov and V. A. Kondrat'ev},
title = {On the negative spectrum of an elliptic operator},
journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
pages = {61--67},
publisher = {mathdoc},
volume = {192},
year = {1990},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TM_1990_192_a5/}
}
Yu. V. Egorov; V. A. Kondrat'ev. On the negative spectrum of an elliptic operator. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and functional spaces, Tome 192 (1990), pp. 61-67. http://geodesic.mathdoc.fr/item/TM_1990_192_a5/