THAKUR, P. K. Electronic Spectroscopy And Its Interpretation. Himalayan Physics, [S. l.], v. 5, p. 112–115, 2015. DOI: 10.3126/hj.v5i0.12888. Disponível em: https://www.nepjol.info/index.php/HP/article/view/12888. Acesso em: 9 dec. 2021.