Concerning soft x-rays.

[1] Holtsmark J, 1922, PHYS Z, V23, P252

[2] Holtsmark J, 1923, PHYS Z, V24, P225

[3] Characteristic X-rays from boron and carbon [J]. PHILOSOPHICAL MAGAZINE, 1922, 43 (253): : 145 - 161

[4] The excitation of soft characteristic X-rays [J]. PHILOSOPHICAL MAGAZINE, 1921, 42 (252): : 1015 - 1019

[5] X-ray electrons [J]. PHILOSOPHICAL MAGAZINE, 1922, 43 (258): : 1116 - +

[6] 1921, J PHYS, V2, P265

[7] 1921, B BUR STAND

[8] 1922, PHYS REV, V18, P461

[9] 1923, PHIL MAG, V45, P721

[10] 1923, P ROY SOC A, V104, P455

[1] Holtsmark J, 1922, PHYS Z, V23, P252

[2] Holtsmark J, 1923, PHYS Z, V24, P225

[3] Characteristic X-rays from boron and carbon [J]. PHILOSOPHICAL MAGAZINE, 1922, 43 (253): : 145 - 161

[4] The excitation of soft characteristic X-rays [J]. PHILOSOPHICAL MAGAZINE, 1921, 42 (252): : 1015 - 1019

[5] X-ray electrons [J]. PHILOSOPHICAL MAGAZINE, 1922, 43 (258): : 1116 - +

[6] 1921, J PHYS, V2, P265

[7] 1921, B BUR STAND

[8] 1922, PHYS REV, V18, P461

[9] 1923, PHIL MAG, V45, P721

[10] 1923, P ROY SOC A, V104, P455