SHARMA, P. V. Jordens indre varrme. Varv, [S. l.], v. 1972, n. 4, p. 108–113, 1972. DOI: 10.7146/varv.v1972i4.150813. Disponível em: https://tidsskrift.dk/varv/article/view/150813. Acesso em: 6 dec. 2025.