New soft x-ray method for determining the chemical forms of sulfur in coal
1974 ◽
Vol 32
◽
pp. 514-515
2019 ◽
Vol 55
(4)
◽
pp. 308-321
◽
2002 ◽
Vol 404-407
◽
pp. 19-24
◽
1993 ◽
Vol 30
(6)
◽
pp. 373