Two types of diamond

[21] THOMSON, 1931, P ROY SOC A, V133, P1

[22] TRICHMANN, 1932, Z PHYS, V78, P21

[23] WILSON, 1931, P ROY SOC A, V134, P277

[24] The internal photoelectric effect in crystals [J]. NATURE, 1932, 130 : 913 - 915

[25] 1911, Z PHYS CHEM, V17, P822

[26] 1903, ANN PHYS, V11, P114

[27] 1930, IND J PHYS, V5, P578

[28] 1932, GENESIS DIAMOND, V2, P460

[29] 1930, IND J PHYS, V5, P97

[30] 1933, P ROY SOC A, V140, P505

[21] THOMSON, 1931, P ROY SOC A, V133, P1

[22] TRICHMANN, 1932, Z PHYS, V78, P21

[23] WILSON, 1931, P ROY SOC A, V134, P277

[24] The internal photoelectric effect in crystals [J]. NATURE, 1932, 130 : 913 - 915

[25] 1911, Z PHYS CHEM, V17, P822

[26] 1903, ANN PHYS, V11, P114

[27] 1930, IND J PHYS, V5, P578

[28] 1932, GENESIS DIAMOND, V2, P460

[29] 1930, IND J PHYS, V5, P97

[30] 1933, P ROY SOC A, V140, P505