1. Kajian Variasi Spasial-Temporal Hidrogeokimia Dan Sifat Aliran Untuk Karakterisasi Perilaku Sistem Karst Dinamis (SKD) Sepanjang Sungai Bawah Tanah (SBT) Bribin. Ph.D. Thesis;Adji,2009
2. The distribution of flood hydrograph recession constant for characterisation of karst spring and underground river flow components releasing within Gunungsewu Karst Region, Indonesia;Adji;Indones. J. Geogr.,2010
3. Rainfall–discharge relationship and karst flow components analysis for karst aquifer characterisation in Petoyan Spring, Java, Indonesia;Adji;Environ. Earth Sci.,2016
4. Diffuse flow characteristics and their relation to hydrochemistry conditions in the Petoyan Spring, Gunungsewu Karst, Java, Indonesia;Adji;Geosci. J.,2016
5. Spatial and temporal hydrochemistry variations of karst water in Gunung Sewu, Java, Indonesia;Adji;Environ. Earth Sci.,2017