@article{SM_1988_61_1_a16,
author = {N. S. Nadirashvili},
title = {Multiple eigenvalues of the {Laplace} operator},
journal = {Sbornik. Mathematics},
pages = {225--238},
year = {1988},
volume = {61},
number = {1},
language = {en},
url = {http://geodesic.mathdoc.fr/item/SM_1988_61_1_a16/}
}
N. S. Nadirashvili. Multiple eigenvalues of the Laplace operator. Sbornik. Mathematics, Tome 61 (1988) no. 1, pp. 225-238. http://geodesic.mathdoc.fr/item/SM_1988_61_1_a16/
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