Kausarian, Husnul, Abd. Rahim Shamsudin, & Yuniarti Yuskar.
" Geotechnical and Rock Mass Characterization Using Seismic Refraction Method at Kajang Rock Quarry, Semenyih, Selangor Darul Ehsan." <em>Journal of Ocean, Mechanical and Aerospace -science and engineering-</em> [Online], 13.1 (2014): 12-17. Web.  6 Oct. 2025