共 5 条
[2]
ROMETSCH R, 1950, HELV CHIM ACTA, V53, P184
[3]
SCHEIBEL EG, 1948, CHEM ENG PROG, V44, P681
[4]
STEN S, 1944, ARKIV KEMI MINERAL A, V18, P86
[5]
VANDIJCK WJD, 1941, Patent No. 2245945