“DEVELOPMENT OF COMPOSITES BASED ON THERMOSETTING POLYMERS (EPOXY, POLYESTER AND VINYLESTER RESINS) WITH CENOSPHERE FILLERS IN DIFFERENT CONCENTRATIONS – 5 WT.%, 10 WT.% AND 15 WT.%” (2025) ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, 4, pp. 81–84. doi:10.17770/etr2025vol4.8431.