Avtar Singh Gill MD. Message from the SUN on 28th August 1859. With ’Gill’s Electronic Theory of Magnetism 1964’, [S. l.], p. 63–82, 2022. DOI: 10.9734/bpi/mono/978-93-5547-764-4/CH4. Disponível em: https://stm.bookpi.org/WGETM/article/view/7204. Acesso em: 4 jun. 2026.