共 17 条
- [11] KRAUCH, Patent No. 1890434
- [12] KRAUCH, 1931, Z ANGEW CH, V44, P953
- [13] MITTASCH, 1931, Patent No. 1791568
- [14] Mittasch A., 1916, U.S. Patent, Patent No. [1,201,850A, 1201850, 1,201,850]
- [15] PIER, 1935, PETROLEUM T, V33, P13
- [16] PIER, 1933, P WORLD PETROLEUM C, V2, P290
- [17] POTT, 1933, GLUCKAUF, V69, P903