共 24 条
[4]
BEAMS JW, 1940, REV SCI INSTRUM, V11, P398
[7]
KRAEMER EO, 1940, FRANKLIN I, V229, P393
[8]
LAMM O, 1937, NOVA ACTA REGIAE SOC, V10
[10]
Pickels E G, 1935, Science, V81, P342, DOI 10.1126/science.81.2101.342