Egbo, Omonigho, et al. “The Light Hydrocarbon Components and Oil-Oil Correlation in Niger Delta Crude Oil: Insights into Source, Thermal Maturation, and In-Reservoir Alteration Processes”. Indonesian Journal on Geoscience, vol. 12, no. 2, Aug. 2025, pp. 267-79, doi:10.17014/ijog.12.2.267-279.