I. K., Ahmedova; SH. S, Namazov; N. KH, Usanbaev; D. А Azimova; A. A., Orakbaev; B. O., Numonov. Oxidation of Brown Coals With Hydrogen Peroxide in the Presence of Oxalic Acid for the Subsequent Production of Humic Soil Improver For Degraded Soils. Excellencia: International Multi-disciplinary Journal of Education (2994-9521), [S. l.], v. 2, n. 10, p. 174–180, 2024. DOI: 10.5281/. Disponível em: https://multijournals.org/index.php/excellencia-imje/article/view/2365. Acesso em: 9 nov. 2025.