M. . Syukri, N. . M. Muztaza, N. A. . Ismail, Z. . Fadhli, and R. . Saad, “IDENTIFYING SHALLOW SUBSURFACE CHARACTERISTICS VIA COMPRESSIONAL TO SHEAR WAVES VELOCITY RATIO (VP/VS) FROM SEISMIC REFRACTION TOMOGRAPHY”, Jurnal Teknologi, vol. 83, no. 1, pp. 67-73, Dec. 2020.