1. Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman, Indonesia
2. Divisi Eksplorasi, Medco E&P Indonesia, Indonesia
3. Department of Geology and Meteorology, Faculty of Sciences, University of Pecs, Hungary
4. Departemen Teknik Elektro, Fakultas Teknik, Universitas Jenderal Soedirman,, Indonesia