PROLIFERATION OF HOUSEHOLD WASTE IRREGULAR DUMPSITES IN NIGER DELTA REGION (NIGERIA): UNSUSTAINABLE PUBLIC HEALTH MONITORING AND FUTURE RESTITUTION ArticleOkpara D.A., Kharlamova M., Grachev V.Sustainable Environment Research. Том 31. 2021.
MORPHODYNAMICS OF RIVER AND COASTAL TRANSPORT OF SEDIMENTS IN MEGA DELTA BASIN, NIGER DELTA NIGERIA ArticleOkpara D.A., Offiong M.B.IOP Conference Series: Earth and Environmental Science. Том 424. 2020.
CONTEMPORARY EVIDENCE OF BIODEGRADATION FOR MSW ECO-TOXICANTS; A SUSTAINABLE INFLUENCE ON NATURAL REMEDIATION STRATEGY ArticleOkpara D.A.Актуальные проблемы экологии и природопользования : сборник научных трудов 20 Международной научно-практической конференции. Москва, 25–27 апреля 2019 г.: в 2 томах. Том 1.. 2019. С. 514-519
WATER RESOURCES AND ECOLOGY. MONITORING POLLUTION AND RESTORATION. NIGERIA AS A CASE STUDY ArticleOkpara D.A.Youth of XXI Century in a Scientific, Cultural and Educational Environment: New Values, Challenges, Perspectives. 2017. С. 222-225