Ahmad, A. and Hafeez, M. and Abbasi, S. A. and Khan, T. M. and Faruque, M. R. I. and Khandaker, Mayeen Uddin * and Ahmad, P. and Rafique, M. and Haleem, N. (2020) Compositional analysis of chalcopyrite using calibration-free laser-induced breakdown spectroscopy. Applied Sciences, 10 (19). p. 6848. ISSN 2076-3417