CHANDA, Amitabha. From Nullity to Propagation of Radiation. European Journal of Applied Sciences, [S. l.], v. 11, n. 3, p. 551–554., 2023. DOI: 10.14738/aivp.113.14854. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/8515. Acesso em: 30 may. 2026.