Virendra Bahadur Singh

Department of Earth and Planetary Sciences, Nehru Science Centre Building, Faculty of Science, University of Allahabad, Allahabad, India
Department of Petroleum Engineering, Graphics Era University, Dehradun, India

Jayant Nath Tripathi

Department of Earth and Planetary Sciences, Nehru Science Centre Building, Faculty of Science, University of Allahabad, Allahabad, India