Transformations of biomass internal oxygen at varied pyrolysis conditionsLuik, Hans; Johannes, Ille; Palu, Vilja; Luik, Lea; Kruusement, KristjanJournal of analytical and applied pyrolysis2007 / 1/2, p. 121-127 Transformations of biomass internal oxygen at varied pyrolysis conditionsLuik, Hans; Johannes, Ille; Palu, Vilja; Luik, Lea; Kruusement, Kristjan17th International Symposium on Analytical and Applied Pyrolysis : Budapest, Hungary, May 21-26, 2006 : book of abstracts2006 / p. 139