Early coalification features as approached by solid state 13C CP/MAS NMR spectroscopy
2006 ◽
Vol 70
(4)
◽
pp. 947-959
◽
1990 ◽
Vol 28
(4)
◽
pp. 587-594
◽
1988 ◽
Vol 172
◽
pp. 395-400
◽