1. Doctoral program of Geological Engineering, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung , Jl. Ganesha, 10 , Bandung , 40132, Jawa Barat , Indonesia
2. Department of Geological Engineering, Faculty of Industrial Technology, Institut Teknologi Sumatera , Jl. Terusan Ryacudu , South Lampung 35365, Lampung , Indonesia
3. Geological Engineering, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung , Jl. Ganesha, 10 , Bandung , 40132, Jawa Barat , Indonesia