@article{1195516255,
author = {Tamura, Hideo},
title = {Asymptotic formulas with sharp remainder estimates for eigenvalues of elliptic operators of second order},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {57},
number = {1},
year = {1981},
pages = { 442-445},
language = {en},
url = {http://dml.mathdoc.fr/item/1195516255}
}
Tamura, Hideo. Asymptotic formulas with sharp remainder estimates for eigenvalues of elliptic operators of second order. Proc. Japan Acad. Ser. A Math. Sci., Tome 57 (1981) no. 1, pp. 442-445. http://gdmltest.u-ga.fr/item/1195516255/