THE COMPOSITION OF HUMIC SUBSTANCES ISOLATED FROM MONGOLIAN BROWN COAL Статья Monkhzhargal Sh., Novikova L.N., Medvedeva S.A., Kushnarev D.F., Rokhin A.V., Dashitsyrenova A.D., Kalabin G.A. Solid Fuel Chemistry. Том 39. 2005. С. 11-17
