参考文献

Elko Chemical Co. Patent: US1753754 , 1930 ; C. I, 1930 , p. 3820 Full Text Show Details Elko Chemical Co. Patent: US1788959 , 1931 ; C. I, 1931 , p. 1806 Full Text Show Details Gmelin Handbook: S: MVol.B3, 122, page 1791 - 1793