共 8 条
[1]
TSCHIRCH A, 1906, HARZE HARZBEHALTER, P821
[2]
ULZER F, 1887, THESIS BERN
[3]
1922, Z ANG, V35, P556
[4]
1922, WISS VEROFFENTL SIEM, V1, P178
[5]
1922, CHEM UMSCHAU, V29, P326
[6]
1922, CHEM UMSCHAU, V29, P135
[7]
1922, Z ANG, V35, P322
[8]
1917, Patent No. 305775