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Literature cited
M. Sh. Birman and M. Z. Solomyak, “The asymptotic behavior of the spectra of differential equations,” Itogi Nauki Tekh., Mat. Analiz.,14, 5–58 (1977).
N. Nilsson, “Some estimates for spectral functions connected with formally hypoelliptic differential operators,” Ark. Mat.,10, No. 2, 251–275 (1972).
K. Kh. Boimatov, “The spectral asymptotic behavior of differential and pseudodifferential operators. I,” Trudy Sem. Petrovsk., No. 7, 50–100 (1981).
S. Agmon, “On kernels, eigenvalues, and eigenfunctions of operators related to elliptic problems,” Commun. Pure Appl. Math.,18, 627–663 (1965).
A. G. Kostyuchenko, “Asymptotic behavior of the spectral function of self-adjoint elliptic operators,” in: Fourth Math. Summer School (Katsiveli, 1966) [in Russian], Naukova Dumka, Kiev (1968), pp. 42–117.
K. Kh. Boimatov and A. G. Kostyuchenko, “The distribution of the eigenvalues of an elliptic operator in a bounded domain,” Trudy Sem. Petrovsk., No. 13, 3–18 (1988).
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Translated from Matematicheskie Zametki, Vol. 49, No. 5, pp. 16–25, May, 1991.
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Boimatov, K.K. Spectral projections of hypoelliptic operators. Mathematical Notes of the Academy of Sciences of the USSR 49, 452–458 (1991). https://doi.org/10.1007/BF01142638
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DOI: https://doi.org/10.1007/BF01142638