共 23 条
[1]
BEER JM, 1983, FAL P INT S AM FLAM
[2]
COLE EL, 1977, Patent No. 4018571
[3]
COLE EL, 1977, Patent No. 4052169
[4]
Evans D. G., 1971, Patent, Patent No. [US 3552031, 3552031]
[5]
EVANS DG, 1972, Patent No. 430626
[6]
Fleissner H., 1927, Patent, Patent No. [US1632829, 1632829]
[7]
Fleissner H., 1928, Patent, Patent No. [US1679078, 1679078]
[8]
HAUSERMAN WB, 1985, UNPUB 7TH INT S COAL
[9]
KLEIN H, 1930, BRAUNKOHLE, V29, P1
[10]
KOPPELMAN E, 1977, Patent No. 4052168

