Steam expolded bamboo fibers structure studiesGravitis, J.; Kokorevics, A.; Bikovens, O.; Kallavus, Urve; Teeäär, R.Proceedings of the 10th International Symposium on Wood and Pulping Chemistry : Main Symposium : Yokohama, Japan, June 7-10, 19991999 / p. 656-661 Structural analysis of sediments from Lake Peipsi, Estonia, by FTIR and Py-GC/MSMakarõtševa, Natalja; Bikovens, O.; Alliksaar, Tiiu; Lepane, ViiaProgramme and Abstracts : 13th Nordic-Baltic IHSS Symposium. The role of natural organic matter in the environment : Oskarsborg, Norway, June 19-22, 20112011 / p. 30 Sugar cane bagasse utilization into fiber materials and value-added chemicals by steam explosion with the zero emission targetGravitis, J.; Suzuki, C.K.; Zandersons, J.; Bikovens, O.; Kokorevics, A.; Morales, R.C.; Kallavus, UrveProceedings [of the] 6th Brazilian Symposium on the Chemistry of Lignins and Other Wood Components : October 25-28, 1999, Guaratingueta, SP, Brazil1999 / [6] p The complementary use of UV, EPR and SEC to study the structural changes of humic substances during wood waste compostingBikovens, O.; Lepane, Viia; Makarõtševa, Natalja; Dizhbite, T.; Telysheva, G.Functions of natural organic matter in changing environment2013 / p. 113-117 Tropical biomass conversion into value added products using steam explosionKokorevics, A.; Gravitis, J.; Bikovens, O.; Kallavus, Urve; Teeäär, R.Proceedings [of the] 13th International Congress of Chemical and Process Engineering CHISA'98, Praha, 23-28 August, 19981998 / CD-ROM record no. 1127, [20] p