“MODIFICATION OF ROCK MASS CLASSIFICATION IN THE ROCK SLOPE PLATY JOINTED ANDESITE AT SELOHARJO AREA”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 16, no. 53, pp. 163–170, Jan. 2019, Accessed: May 27, 2026. [Online]. Available: https://geomatejournal.com/geomate/article/view/2829