Supandi, Zufialdi Zakaria, Emi Sukiyah, and Adjat Sudradjat. “THE CORRELATION OF EXPOSURE TIME AND CLAYSTONE PROPERTIES AT THE WARUKIN FORMATION INDONESIA”. GEOMATE Journal, vol. 15, no. 52, Oct. 2018, pp. 160-7, https://geomatejournal.com/geomate/article/view/783.