共 7 条
- [1] ANDERSON JL, 1956, Patent No. 2743303
- [3] MARTIN EL, 1959, Patent No. 2888447
- [4] MILLER WT, 1955, Patent No. 2716141
- [5] MILLER WT, 1954, Patent No. 2668182
- [6] SWARTS F, 1903, B ACAD ROY BELG, P597
- [7] SWARTZ F, 1903, CHEM ZENTR, V74, P709