Energy Bands and Projection Operators in a Crystal: Analytic and Asymptotic Properties

Analytic Properties of Bloch Waves and Wannier Functions

1959 • 1,092 citations

Orthogonal Orbitals and Generalized Wannier Functions

1963 • 180 citations

Eigenfunction Expansions Associated with Second-Order Differential Equations, Part 2

1958 • 131 citations