Accidental degeneracy in the energy bands of crystals

[1] On the vibrational spectrum of a three dimensional lattice [J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1937, 159 (A898) : 0416 - 0431

[2] Theory of Brilloum zones and symmetry properties of wave functions in crystals [J]. PHYSICAL REVIEW, 1936, 50 (01): : 58 - 67

[3] BURNSIDE, THEORY EQUATIONS, V2, P66

[4] Energy bands in copper [J]. PHYSICAL REVIEW, 1935, 48 (08): : 664 - 671

[5] MANNING, 1937, PHYS REV, V51, P761

[6] Electronic energy bands in metals [J]. PHYSICAL REVIEW, 1934, 45 (11): : 0794 - 0801

[7] von Neumann J, 1929, PHYS Z, V30, P467

[1] On the vibrational spectrum of a three dimensional lattice [J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1937, 159 (A898) : 0416 - 0431

[2] Theory of Brilloum zones and symmetry properties of wave functions in crystals [J]. PHYSICAL REVIEW, 1936, 50 (01): : 58 - 67

[3] BURNSIDE, THEORY EQUATIONS, V2, P66

[4] Energy bands in copper [J]. PHYSICAL REVIEW, 1935, 48 (08): : 664 - 671

[5] MANNING, 1937, PHYS REV, V51, P761

[6] Electronic energy bands in metals [J]. PHYSICAL REVIEW, 1934, 45 (11): : 0794 - 0801

[7] von Neumann J, 1929, PHYS Z, V30, P467