共 9 条
[1]
Angelova GE, 1981, IZV CHIMIA AN BULG, V14, P251
[2]
ANGELOVA GK, 1986, KHIM TVERD TOPL, V4, P94
[4]
HOWARD JB, 1981, FUNDAMENTALS COAL PY, P667
[6]
JUNTGEN H, 1985, ERDOL KOHLE ERDGAS P, V38, P448
[7]
KOLISHKIN DA, 1972, AKTIVNYIE UGLI, P57
[9]
MINKOVA VN, 1986, ACTA MONTANA, V73, P63