On the multiplicity of a spectrum of a first-order selfadjoint differential operator
Differencialʹnye uravneniâ, Tome 17 (1981) no. 6, pp. 1135-1138
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@article{DE_1981_17_6_a19,
author = {V. I. Filippenko},
title = {On the multiplicity of a spectrum of a first-order selfadjoint differential operator},
journal = {Differencialʹnye uravneni\^a},
pages = {1135--1138},
year = {1981},
volume = {17},
number = {6},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1981_17_6_a19/}
}
V. I. Filippenko. On the multiplicity of a spectrum of a first-order selfadjoint differential operator. Differencialʹnye uravneniâ, Tome 17 (1981) no. 6, pp. 1135-1138. http://geodesic.mathdoc.fr/item/DE_1981_17_6_a19/