ON A 3D INITIAL-BOUNDARY VALUE PROBLEM FOR DETERMINING THE DYNAMICS OF IMPURITIES CONCENTRATION IN A HORIZONTAL LAYERED FINE-PORE MEDIUM. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 3, p. 60–69, 2019. DOI: 10.17770/etr2019vol3.4172. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4345.. Acesso em: 11 mar. 2026.