RESEARCH OF THE DENSITY BY HYDROSTATIC WEIGHT METHOD OF POLYMER COMPOSITE MATERIALS BASED ON RECYCLED POLYETHYLENE WASTE. Scientific journal of the Fergana State University, [S. l.], v. 30, n. 3, p. 147, 2024. Disponível em: https://journal.fdu.uz/index.php/sjfsu/article/view/4393. Acesso em: 6 jan. 2026.