DUARI, D. M. P. Birla Planetarium - Glorious 50 years. Indian Science Cruiser, [S. l.], v. 26, n. 3, p. 64–65, 2012. Disponível em: https://informaticsjournals.com/index.php/ISC/article/view/37970. Acesso em: 22 jul. 2024.