LAMICHHANE, H. P. Construction of Dirac Delta Function from the Discrete Orthonormal Basis of the Function Space. Himalayan Physics, [S. l.], v. 6, p. 54–57, 2017. DOI: 10.3126/hj.v6i0.18360. Disponível em: https://www.nepjol.info/index.php/HP/article/view/18360. Acesso em: 3 dec. 2021.