共 7 条
[1]
FRITZE H, 1969, ESCHER WYSS MITTEILU, V42
[2]
KEHL E, 1932, ESCHER WYSS MITTEILU
[3]
KIRSCHBAUM E, 1956, CHEM ING TECH, P520
[4]
MAHLER, 1921, Patent No. 403076
[5]
MAHLER, 1932, Patent No. 554945
[6]
MAURER W, 1962, STARKE, V14, P197