WKB approximation.

Physical Problems Solved by the Phase-Integral Method. by: (Electronic resources)

A tutorial on the WKB approximation for innovative Dirac materialsgraphene and beyond / by: (Electronic resources)

Electronic Structure Calculations.

Graphene.

Dirac equation.

Mathematical Methods in Physics.

WKB approximation.

Quantum Optics.

Two-dimensional Materials.

Photonic Crystals.