SHARMA, P. Vallabh. Forstenede magneter. Varv, [S. l.], v. 1969, n. 3, p. 78–86, 1969. DOI: 10.7146/varv.v1969i3.151246. Disponível em: https://tidsskrift.dk/varv/article/view/151246. Acesso em: 6 dec. 2025.