1. The Kronig-Penney model.
2. N-particle linear chain model.
3. Scalar potental in the cylindrical magnet.
4. Parallel-plate capacitor in two dimensions.
5. Heat flow in a metal bar.
6. Semiclassical quantization of molecular vibrations: Bohr-Sommerfeld quantization for bound states of the Lennard-Jones Potential
7. Hartree-Fock solutions of small atomic systems in the filling approximation.
8. Ground state of many electron system using density functional theory (DFT).
9. Calculation of energy bands in crystals.