M. H. Nasution, M. . Hardi, A. . Widiyanto, E. T. M. E.Silalahi, and O. K. Wardani, “Rapid Source Attribution of Illegal Crude Oil Dumping Using GC–FID Fingerprinting and Multivariate Analysis in the Rokan Field”, CJTK, vol. 13, no. 1, pp. 40–50, Mar. 2026.