Spectral structures for elements of the second long period

[1] BEALS, 1925, P ROY SOC LONDON A, V109, P369

[2] BECHERT, 1925, ANAL SOC ESP FIS QUI, V23, P457

[3] BURGER, 1925, Z PHYS, V31, P355

[4] CATALAN, 1923, ANN SOC ESPANOL FISI, V21, P213

[5] DEGRAMONT, 1920, C R, V171, P1106

[6] DIESS, 1923, SCI PAP BUR STAND, V19, P113

[7] FOWLER, 1922, SERIES LINE SPECTRA

[8] GOUDSMIT, 1924, P ROY ACAD SCI AMSTE, V28

[9] GOUDSMIT, 1925, P ROY ACAD SCI AMSTE, V28

[10] HEISENBERG, 1925, Z PHYS, V32, P841

[1] BEALS, 1925, P ROY SOC LONDON A, V109, P369

[2] BECHERT, 1925, ANAL SOC ESP FIS QUI, V23, P457

[3] BURGER, 1925, Z PHYS, V31, P355

[4] CATALAN, 1923, ANN SOC ESPANOL FISI, V21, P213

[5] DEGRAMONT, 1920, C R, V171, P1106

[6] DIESS, 1923, SCI PAP BUR STAND, V19, P113

[7] FOWLER, 1922, SERIES LINE SPECTRA

[8] GOUDSMIT, 1924, P ROY ACAD SCI AMSTE, V28

[9] GOUDSMIT, 1925, P ROY ACAD SCI AMSTE, V28

[10] HEISENBERG, 1925, Z PHYS, V32, P841