共 59 条
- [21] FISCHER H, 1937, ANNALEN, V531, P245
- [22] FRANCE H, COMMUNICATION
- [23] FRANCE H, 1950, Patent No. 2981
- [24] HELBERGER, 1938, ANNALEN, V533, P197
- [25] HELBERGER, 1937, ANNALEN, V531, P279
- [26] HELBERGER, 1938, ANNALEN, V536, P173
- [27] LINSTEAD, UNPUB
- [28] LINSTEAD, 1939, BER A, V72, P93
- [29] LINSTEAD, 1933, BRIT ASS REPORTS
- [30] LINSTEAD, 1937, ANN REPORTS, V34, P371