参考文献
Gmelin Handbook: Na: SVol.4, 7, page 1382 - 1384
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Stikstofbindingsindustrie Nederland N. V.
Patent: NL47979 , 1940 ;
C. II, 1940 , p. 689
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Stikstofbindingsindustrie Nederland N. V.
Patent: US2208033 , 1940 ;
C. II, 1940 , p. 2959