Vasil’ev, D. G. Asymptotics of the spectrum of a boundary value problem. (English) Zbl 0632.58036 Trans. Mosc. Math. Soc. 1987, 173-245 (1987). Translation from Tr. Mosk. Mat. 0.-va 49, 167-237 (Russian) (1986; Zbl 0623.58024). Cited in 1 Review MSC: 58J50 Spectral problems; spectral geometry; scattering theory on manifolds 35P20 Asymptotic distributions of eigenvalues in context of PDEs 58J45 Hyperbolic equations on manifolds 35P25 Scattering theory for PDEs 58J32 Boundary value problems on manifolds Keywords:Hamiltonian billiard; absolutely periodic point; deadlock point; selfadjoint elliptic 2mth order scalar partial differential operator; eigenvalue counting function; matrix operators Citations:Zbl 0623.58024 PDFBibTeX XMLCite \textit{D. G. Vasil'ev}, Trans. Mosc. Math. Soc. 1987, 173--245 (1987; Zbl 0632.58036)