Abstract: The biquadratic plane-wave dispersion relation (Appleton-Hartree type) for anisotropic dielectrics or anisotropic magnetic materials is extended to include the case of a medium that has both ...

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In this article we classify flexible Kokotsakis polyhedra with quadrangular bases. The analysis is based on the fact that any pair of adjacent dihedral angles of a Kokotsakis polyhedron is related by ...