PROLIFERATION OF HOUSEHOLD WASTE IRREGULAR DUMPSITES IN NIGER DELTA REGION (NIGERIA): UNSUSTAINABLE PUBLIC HEALTH MONITORING AND FUTURE RESTITUTION Article Okpara D.A., Kharlamova M., Grachev V. Sustainable Environment Research. BioMed Central Ltd. Vol. 31. 2021.
MORPHODYNAMICS OF RIVER AND COASTAL TRANSPORT OF SEDIMENTS IN MEGA DELTA BASIN, NIGER DELTA NIGERIA Article Okpara D.A., Offiong M.B. IOP Conference Series: Earth and Environmental Science. Institute of Physics Publishing. Vol. 424. 2020.
CONTEMPORARY EVIDENCE OF BIODEGRADATION FOR MSW ECO-TOXICANTS; A SUSTAINABLE INFLUENCE ON NATURAL REMEDIATION STRATEGY Article Okpara D.A. Актуальные проблемы экологии и природопользования. Российский университет дружбы народов (РУДН). 2019. P. 514-519