New lines in the arc and spark spectrum of helium

[1] Extreme ultraviolet spectra excited by controlled electron impacts [J]. JOURNAL OF THE FRANKLIN INSTITUTE, 1928, 205 : 497 - 513

[2] Series spectra of the lightest Elements in the extreme Ultraviolet. [J]. ZEITSCHRIFT FUR PHYSIK, 1930, 59 (9-10): : 656 - 679

[3] LYMANN T, 1924, ASTROPHYS J, V60

[4] PASCHEN F, 1929, SITZUNGSBERICHTEN PR, V662

[5] SAWYER, 1927, J OPT SOC AM, V15, P305

[6] SOMMER, 1927, P NAT ACAD SC, V13, P213

[1] Extreme ultraviolet spectra excited by controlled electron impacts [J]. JOURNAL OF THE FRANKLIN INSTITUTE, 1928, 205 : 497 - 513

[2] Series spectra of the lightest Elements in the extreme Ultraviolet. [J]. ZEITSCHRIFT FUR PHYSIK, 1930, 59 (9-10): : 656 - 679

[3] LYMANN T, 1924, ASTROPHYS J, V60

[4] PASCHEN F, 1929, SITZUNGSBERICHTEN PR, V662

[5] SAWYER, 1927, J OPT SOC AM, V15, P305

[6] SOMMER, 1927, P NAT ACAD SC, V13, P213