共 10 条
- [1] FRIES K, 1919, BER, V52, P2173
- [2] FRIES K, 1912, BER, V45, P2966
- [3] FRIES K, 1919, BER, V52, P2174
- [7] LECHER H, 1924, BER, V57, P757
- [8] WILLGERODT, 1884, BER R, V17, P352
- [9] ZINCKE T, 1918, BER, V51, P756
- [10] 1942, Patent No. 2304557